BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//18a41c55e5f61d2a42b10cd7e21d5df0.ias.edu//NONSGML kigkonsult.se i
Calcreator 2.29.30//
CALSCALE:GREGORIAN
UID:3d02e8a2-882e-4ad5-80bf-25f8741f6788
X-WR-TIMEZONE:UTC
X-WR-CALNAME:IAS Mathematics
BEGIN:VEVENT
UID:6c2fe81b-1e90-47ae-8731-dc17c0bb944c
DTSTAMP:20210119T130816Z
CREATED:20200827T124710Z
DESCRIPTION:Topic: A Parallel Repetition Theorem for the GHZ Game\n\nSpeake
rs: Justin Holmgren\n\nAffiliation: Massachusetts Institute of Technology
\n\nWe prove that parallel repetition of the (3-player) GHZ game reduces\n
the value of the game polynomially fast to 0. That is\, the value of\nthe
GHZ game repeated in parallel t times is at most $t^{-\Omega(1)}.\nPreviou
sly\, only a bound of roughly 1 / alpha(t)\, where alpha is the\ninverse A
ckermann function\, was known.\n\nThe GHZ game was recently identified by
Dinur\, Harsha\, Venkat and Yuen\nas a multi-player game where all existin
g techniques for proving\nstrong bounds on the value of the parallel repet
ition of the game\nfail. Indeed\, to prove our result we use a completely
new proof\ntechnique. Dinur et al. speculated that progress on bounding th
e value\nof the parallel repetition of the GHZ game may lead to further\np
rogress on the general question of parallel repetition of\nmulti-player ga
mes. They suggested that the strong correlations\npresent in the GHZ quest
ion distribution represent the ``hardest\ninstance'' of the multi-player p
arallel repetition problem.\n\nAnother motivation for studying the paralle
l repetition of the GHZ\ngame comes from the field of quantum information.
The GHZ game\, first\nintroduced by Greenberger\, Horne and Zeilinger\, i
s a central game in\nthe study of quantum entanglement and has been studie
d in numerous\nworks. For example\, it is used for testing quantum entangl
ement and\nfor device-independent quantum cryptography. In such applicatio
ns a\ngame is typically repeated to reduce the probability of error\, and
\nhence bounds on the value of the parallel repetition of the game may\nbe
useful.\n
DTSTART:20201019T151500Z
DTEND:20201019T161500Z
LAST-MODIFIED:20210106T050202Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-463
END:VEVENT
BEGIN:VEVENT
UID:f8248bce-018a-4fa6-a449-5e423665851b
DTSTAMP:20210119T130816Z
CREATED:20200905T181018Z
DESCRIPTION:Topic: Log-concavity\, matroids and expanders\n\nSpeakers: Cynt
hia Vinzant\n\nAffiliation: North Carolina State University\; von Neumann
Fellow\, School of Mathematics\n\nMatroids are combinatorial objects that
model various types of\nindependence. They appear several fields mathemati
cs\, including graph\ntheory\, combinatorial optimization\, and algebraic
geometry. In this\ntalk\, I will introduce the theory of matroids along wi
th the closely\nrelated class of polynomials called strongly log-concave p
olynomials.\nStrong log-concavity is a functional property of a real multi
variate\npolynomial that translates to useful conditions on its coefficien
ts.\nClosed related classes are real stable and Lorentzian polynomials.\nD
iscrete probability distributions defined by these coefficients\ninherit s
everal of these nice properties. I will discuss the beautiful\nreal and co
mbinatorial geometry underlying these polynomials and\ndescribe applicatio
ns to random walks on the faces of simplicial\ncomplexes. This is based on
joint work with Nima Anari\, Kuikui Liu\,\nand Shayan Oveis Gharan.\n
DTSTART:20201019T180000Z
DTEND:20201019T190000Z
LAST-MODIFIED:20210105T112510Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-339
END:VEVENT
BEGIN:VEVENT
UID:49f3fa42-438b-4150-b917-6774fa55b806
DTSTAMP:20210119T130816Z
CREATED:20200925T221659Z
DESCRIPTION:Topic: Spectral Statistics of Lévy Matrices\n\nSpeakers: Patric
k Lopatto\n\nAffiliation: Member\, School of Mathematics\n\nLévy matrices
are symmetric random matrices whose entries are\nindependent alpha-stable
laws. Such distributions have infinite\nvariance\, and when alpha is less
than 1\, infinite mean. In the latter\ncase these matrices are conjectured
to exhibit a sharp transition from\na delocalized regime at low energy to
a localized regime at high\nenergy\, like the infamous Anderson model in
mathematical physics. We\ndiscuss work establishing the existence of a del
ocalized regime with\nGOE eigenvalue statistics. Further\, we characterize
the eigenvector\nstatistics in this regime and find they display novel\,
non-Gaussian\nbehavior.\n\nThis talk describes joint works with Amol Aggar
wal\, Jake Marcinek\, and\nHorng-Tzer Yau.\n
DTSTART:20201019T203000Z
DTEND:20201019T213000Z
LAST-MODIFIED:20210105T112601Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-122
END:VEVENT
BEGIN:VEVENT
UID:09dc8145-d599-46d1-bf89-c0e507938e04
DTSTAMP:20210119T130816Z
CREATED:20200827T131806Z
DESCRIPTION:Topic: The threshold for the square of a Hamilton cycle\n\nSpea
kers: Jinyoung Park\n\nAffiliation: Member\, School of Mathematics\n\nWe w
ill talk about a recent result of Jeff Kahn\, Bhargav Narayanan\,\nand mys
elf stating that the threshold for the random graph G(n\,p) to\ncontain th
e square of a Hamilton cycle is 1/sqrt n\, resolving a\nconjecture of Kühn
and Osthus from 2012. For context\, we will first\nspend some time discus
sing a recent result of Keith Frankston and the\nthree aforementioned auth
ors on a conjecture of Talagrand (a\nfractional version of Kahn-Kalai 'exp
ectation-threshold conjecture').\n
DTSTART:20201020T143000Z
DTEND:20201020T163000Z
LAST-MODIFIED:20210106T050254Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-458
END:VEVENT
BEGIN:VEVENT
UID:3daff0ff-085c-495a-9690-e28b3d1ae660
DTSTAMP:20210119T130816Z
CREATED:20201002T172417Z
DESCRIPTION:Topic: Model categories and simplicial homotopy theory\n\nSpeak
ers: Charles Weibel\n\nAffiliation: Rutgers University\; Member\, School o
f Mathematics\n\n
DTSTART:20201020T173000Z
DTEND:20201020T193000Z
LAST-MODIFIED:20210104T013329Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-1
END:VEVENT
BEGIN:VEVENT
UID:10674b4c-a27a-4d7b-b1d8-7716449cc58a
DTSTAMP:20210119T130816Z
CREATED:20201016T142442Z
DESCRIPTION:Topic: Representations of GL_2(F_q) in defining characteristic:
a number-theorist's perspective\n\nSpeakers: Matthew Emerton\n\nAffiliati
on: University of Chicago\n\nIn this talk I hope to explain how the repres
entation theory of\n$GL_n(F_q)$ (with q being a power of p) in char. p\, a
nd also in mixed\ncharacteristic $(0\,p)$\, plays an important role in the
theory of\nGalois representations and the Langlands program. The case of
\n$GL_2(F_q)$ is already very interesting\, and I will focus on that\ncase
(but will also try to indicate what is general to $GL_n$\, and what\nis sp
ecial to the $GL_2$ case).There is a key method in number-theory\,\ncalled
patching (due to Taylor--Wiles and Kisin)\, which is at the\nbasis of the
connection. In my talk\, I *won't* really try to explain\nwhere this come
s from (that would take us away from rep. theory and\ninto the thick of th
e arithmetic theory of automorphic forms)\, but\n*will* instead focus on t
he axiomatic structures that come out of the\nmethod (``patching functors'
'). A priori there are lots of patching\nfunctors\, but we can hope that a
ctually there is only one of them\n(i.e. that all patching functors are na
turally isomorphic). For reps.\nof $GL_2(F_q)\,$ this is more-or-less prov
ed (as I will try to\nexplain)\, via results of Le--Morra--Schraen/Hu--Wan
g/Le/Dotto--Le\;\nnevertheless\, in some sense we don't really understand
*why* it's true\n(as is the case for many results in the Langlands program
!)\, and there\nare lots of surprising\, seemingly coincidental\, phenomen
a for which we\nwould like to have conceptual explanations. The study of p
atching\nfunctors uses a mixture of rep'n theory and number-theoretic meth
ods.\nI will explain some of the key rep'n theoretic input\, and also expl
ain\nwhat else we would like to know about the rep'n theory\, which might
\nhelp shed more light on the structure and meaning of patching\nfunctors.
\n
DTSTART:20201020T210000Z
DTEND:20201020T220000Z
LAST-MODIFIED:20210106T232910Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar
END:VEVENT
BEGIN:VEVENT
UID:6120e535-33e5-44bd-9071-c54b42816c1e
DTSTAMP:20210119T130816Z
CREATED:20200901T214334Z
DESCRIPTION:Topic: Stability and testability - a computational perspective
\n\nSpeakers: Jonathan Mosheiff\n\nAffiliation: Carnegie Mellon University
\n\nIn this talk we survey the recent connection (a joint work with Becker
\nand Lubotzky) between certain group theoretic notions related to\nstabil
ity\, and a novel class of problems from the realm of _property\ntesting._
Consider the computational problem where we are given a\ntuple of permuta
tions in $Sym(n)$\, and wish to determine whether these\npermutations sati
sfy a certain system of equations $E$. We say that\n$E$ is _testable_ if t
here is an algorithm (called a _tester_) that\nqueries only a constant num
ber of entries of the given permutations\,\nand probabilistically distingu
ishes between the case where the\npermutations satisfy $E$\, and the case
in which they are epsilon-far\nfrom any tuple of permutations satisfying $
E$. Note that in our\ndefinition of this problem we depart from the more c
lassical setting\nof property testing\, where the object to be tested is e
ither a\nfunction or a graph. We observe an intriguing connection between
the\ngroup presented by $E$\, which we denote $G$\, and the above\ncomputa
tional problem. It turns out that $G$ is stable if and only if\na certain
natural algorithm is a tester for $E$. Thus\, established\nresults about t
he stability of certain groups yield testers for\ncorresponding systems of
equations. Further exploring this connection\,\nwe discover that the test
ability of $E$ can be fully characterized in\nterms of the group $G$. Stud
ying this characterization yields both\npositive and negative results. For
example\, amenability of $G$ implies\nthat $E$ is testable. On the other
hand\, if $G$ has property (T) and\nfinite quotients of unbounded cardinal
ity\, then $E$ is not testable.\nWe conclude by presenting some natural op
en questions motivated by\nthis work.\n
DTSTART:20201021T150000Z
DTEND:20201021T161500Z
LAST-MODIFIED:20210104T013425Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-0
END:VEVENT
BEGIN:VEVENT
UID:21a1ec78-4301-433f-af07-78bed8d5a8f3
DTSTAMP:20210119T130816Z
CREATED:20201008T194208Z
DESCRIPTION:Topic: (Equivariant) Cohomology of the affine Grassmannian and
Ginzburg’s picture\n\nAffiliation: University of Sydney\; Member\, School
of Mathematics\n\nThis is the second talk in a series of three talks on th
e derived\nSatake. I will give an overview of an article by Ginzburg which
laid\nthe foundational ideas for this equivalence.\n
DTSTART:20201021T190000Z
DTEND:20201021T210000Z
LAST-MODIFIED:20210104T013523Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-4
END:VEVENT
BEGIN:VEVENT
UID:96d63c5c-adcf-45ea-9fe5-a3d04ec789c8
DTSTAMP:20210119T130816Z
CREATED:20200806T225427Z
DESCRIPTION:Topic: The Mumford-Shah conjecture\n\nSpeakers: Silvia Ghinassi
\n\nAffiliation: University of Washington\; Visitor\, School of Mathematic
s\n\nThe Mumford-Shah functional has been introduced by Mumford and Shah i
n\n1989 as a variational model for image reconstruction. Since then\, it\n
has been widely studied both from a theoretical and an applied point\nof v
iew. In this talk we will focus on regularity of minimizers\,\nespecially
the famous Mumford-Shah conjecture. I will try to present\nthe existence a
nd regularity results up to today\, and if time allows\ndiscuss some recen
t progress (joint work with Camillo De Lellis and\nMatteo Focardi).\n
DTSTART:20201021T213000Z
DTEND:20201021T230000Z
LAST-MODIFIED:20210104T013618Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-186
END:VEVENT
BEGIN:VEVENT
UID:86ed7f03-e949-4c3d-a9bd-954ef3f78065
DTSTAMP:20210119T130816Z
CREATED:20201009T161503Z
DESCRIPTION:
DTSTART:20201022T140000Z
DTEND:20201022T160000Z
LAST-MODIFIED:20210104T013715Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-2
END:VEVENT
BEGIN:VEVENT
UID:26155b8d-172f-462e-866a-e356e755d889
DTSTAMP:20210119T130816Z
CREATED:20200923T172348Z
DESCRIPTION:Topic: On the locally analytic vectors of the completed cohomol
ogy of modular curves\n\nSpeakers: Lue Pan\n\nAffiliation: University of C
hicago\n\nA classical result identifies holomorphic modular forms with hig
hest\nweight vectors of certain representations of $SL_2(\mathbb{R})$. We
\nstudy locally analytic vectors of the (p-adically) completed\ncohomology
of modular curves and prove a p-adic analogue of this\nresult. As applica
tions\, we are able to prove a classicality result\nfor overconvergent eig
enforms and give a new proof of Fontaine-Mazur\nconjecture in the irregula
r case under some mild hypothesis. One\ntechnical tool is relative Sen the
ory which allows us to relate\ninfinitesimal group action with Hodge(-Tate
) structure.\n
DTSTART:20201022T203000Z
DTEND:20201022T213000Z
LAST-MODIFIED:20210108T152246Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-425
END:VEVENT
BEGIN:VEVENT
UID:862abd7d-61b6-4388-a749-7ad7e964d83a
DTSTAMP:20210119T130816Z
CREATED:20200901T215541Z
DESCRIPTION:Topic: Examples related to Viterbo's conjectures\n\nSpeakers: M
ichael Hutchings\n\nAffiliation: University of California\, Berkeley\n\nVi
terbo conjectured that a normalized symplectic capacity\, on convex\ndomai
ns of a given volume\, is maximized for the ball. A stronger\nversion of t
his conjecture asserts that all normalized symplectic\ncapacities agree on
convex domains. Since convexity is not\nsymplectomorphism invariant\, one
can also ask to what extent these\nstatements still hold for nonconvex do
mains. We survey some special\ncases and examples around these questions\,
including recent joint\nworks with Julian Chaidez and Jean Gutt + Viniciu
s Ramos.\n
DTSTART:20201023T131500Z
DTEND:20201023T144500Z
LAST-MODIFIED:20210104T013908Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-45
END:VEVENT
BEGIN:VEVENT
UID:97940366-6502-492d-9157-68b2f9af6870
DTSTAMP:20210119T130816Z
CREATED:20200820T172552Z
DESCRIPTION:Topic: How to describe\, analyze and interrogate dynamics of ge
ne regulatory networks\n\nSpeakers: Tomas Gedeon\n\nAffiliation: Montana S
tate University\n\nWe first describe mathematical foundation of DSGRN (Dyn
amic Signatures\nGenerated by Regulatory Networks)\, an approach that prov
ides a\nqueryable description of global dynamics of a network over its ent
ire\nparam- eter space. We describe a connection to Boolean network models
\nthat allows us to view DSGRN as a platform for bifurcation theory of\nBo
olean maps.\n\nWe describe several applications. We show how to use DSGRN
to (1)\ndesign a network that performs a biological function\; (2) diagnos
e why\na synthetic network failed\, and (3) delineate dynamics of network
that\ngoverns epithelial-mesenchynal transition\, which allows cells to\ne
scape confinement of a tissue and migrate.\n
DTSTART:20201023T180000Z
DTEND:20201023T193000Z
LAST-MODIFIED:20210104T014006Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/math/events/workshop-topology-identifying-order-com
plex-systems-127
END:VEVENT
BEGIN:VEVENT
UID:09c6b3e8-2769-49bd-a3f2-7877e08311c8
DTSTAMP:20210119T130816Z
CREATED:20200827T124824Z
DESCRIPTION:Topic: Fractionally Log-Concave and Sector-Stable Polynomials:
Counting Planar Matchings and More\n\nSpeakers: Nima Anari\n\nAffiliation:
Stanford University\n\nWe introduce two new notions for polynomials assoc
iated with discrete\nset-valued probability distributions. These notions g
eneralize\nwell-studied properties like real-stability and log-concavity\,
but\nunlike them robustly degrade under a number of useful transformation
s\napplied to the polynomial/distribution. We show that these notions\nimp
ly polynomial time approximate sampling and counting algorithms\nthrough r
apid mixing of multi-site Glauber dynamics. We establish the\nnew notions
for polynomials/distributions related to matchings\,\nPfaffian point proce
sses\, and partition-constrained strongly Rayleigh\nmeasures with O(1) par
titions. As the main application we show how to\napproximately count match
ings of a desired size k\, or sample from the\nmonomer-dimer distribution\
, in arbitrary planar graphs (not\nnecessarily bipartite) in polynomial ti
me\; this answers a question\nraised by Jerrum in 1987 who proved intracta
bility of exact counting\nin the planar case. Joint work with Yeganeh Alim
ohammadi\, Kirankumar\nShiragur\, and Thuy-Duong Vuong.\n
DTSTART:20201026T151500Z
DTEND:20201026T161500Z
LAST-MODIFIED:20210106T050346Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-464
END:VEVENT
BEGIN:VEVENT
UID:54facf8e-9d03-4a86-9e78-eb929d4b0816
DTSTAMP:20210119T130816Z
CREATED:20200905T181153Z
DESCRIPTION:Topic: Paper Moebius Bands\n\nSpeakers: Richard Schwartz\n\nAff
iliation: Brown University\; Member\, School of Mathematics\n\nYou can mak
e a paper Moebius band by starting with a $1$ by $L$\nrectangle\, giving i
t a twist\, and then gluing the ends together. The\nquestion is: How short
can you make $L$ and still succeed in making\nthe thing? This question go
es back to B. Halpern and C. Weaver in\n1977. The previously known lower b
ound was $\pi/2$ and the previously\nknown upper bound\, conjectured to be
the true answer\, is $\sqrt{3}$.\nIn my talk I will explain how to get th
e lower bound up to about\n$\sqrt{3}-1/26$\, which is an improvement on $\
pi/2$\, and I will also\nexplain show to reduce the question about the sha
rp upper bound to\nshowing\, a finite number of times\, that some explicit
piecewise\nalgebraic function is non-negative on the unit cube in $14$\nd
imensions. (I'm working on the calculations...) These calculations\nhave t
o do with geometrical properties of finite tensetrigies.\n
DTSTART:20201026T180000Z
DTEND:20201026T190000Z
LAST-MODIFIED:20210105T112652Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-340
END:VEVENT
BEGIN:VEVENT
UID:d1d22b0d-eff8-4d72-9fdd-7e49dec0e90c
DTSTAMP:20210119T130816Z
CREATED:20200925T221703Z
DESCRIPTION:Topic: Kolmogorov\, Onsager and a stochastic model for turbulen
ce\n\nSpeakers: Susan Friedlander\n\nAffiliation: University of Southern C
alifornia\; Member\, School of Mathematics\n\nWe will briefly review Kolmo
gorov’s (41) theory of homogeneous\nturbulence and Onsager’s (49) conjectu
re that in 3-dimensional\nturbulent flows energy dissipation might exist e
ven in the limit of\nvanishing viscosity. Although over the past 60 years
there is a vast\nbody of literature related to this subject\, at present t
here is no\nrigorous mathematical proof that the solutions to the Navier-S
tokes\nequations yield Kolmogorov’s laws. For this reason various models\n
have been introduced that are more tractable but capture some of the\nesse
ntial features of the Navier-Stokes equations themselves. We will\ndiscuss
one such stochastically driven dyadic model for turbulent\nenergy cascade
s. We will describe how results for stochastic PDEs can\nbe used to prove
that this dyadic model is consistent with\nKolmogorov’s theory and Onsager
’s conjecture.\n\nThis is joint work with Vlad Vicol and Nathan Glatt-Holt
z.\n
DTSTART:20201026T203000Z
DTEND:20201026T213000Z
LAST-MODIFIED:20210105T112744Z
LOCATION:Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-123
END:VEVENT
BEGIN:VEVENT
UID:f99ae844-2ba6-46ce-aab6-aba2c362e83e
DTSTAMP:20210119T130816Z
CREATED:20200827T131715Z
DESCRIPTION:Topic: On the extension complexity of random polytopes\n\nSpeak
ers: Lisa Sauermann\n\nAffiliation: Member\, School of Mathematics\n\nSome
times\, it is possible to represent a complicated polytope as a\nprojectio
n of a much simpler polytope. To quantify this phenomenon\,\nthe extension
complexity of a polytope P is defined to be the minimum\nnumber of facets
in a (possibly higher-dimensional) polytope from\nwhich P can be obtained
as a (linear) projection. In this talk\, I will\nfirst give some backgrou
nd on extension complexity and explain its\nconnection to the notion of no
n-negative rank. I will then discuss\nsome results on the extension comple
xity of random polytopes (which\nare obtained as the convex hull of indepe
ndent random points either in\nthe unit ball or on the unit sphere)\, whic
h are joint work with\nMatthew Kwan and Yufei Zhao. Our results prove that
the extension\ncomplexity of these random polytopes is typically on the o
rder of the\nsquare root of number of vertices of the polytope.\n
DTSTART:20201027T143000Z
DTEND:20201027T163000Z
LAST-MODIFIED:20210106T050437Z
LOCATION:Simonyi 101 and Remote Access
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-459
END:VEVENT
BEGIN:VEVENT
UID:da1c2f01-6f46-4373-8ad2-6e6cf45c3787
DTSTAMP:20210119T130816Z
CREATED:20201002T172425Z
DESCRIPTION:Topic: Quick introduction to quasicategories\n\nSpeakers: Allen
Yuan\n\nAffiliation: Columbia University and the Massachusetts Institute
of Technology\n\n
DTSTART:20201027T173000Z
DTEND:20201027T193000Z
LAST-MODIFIED:20210104T014103Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-2
END:VEVENT
BEGIN:VEVENT
UID:7b95d682-9345-480d-ae17-e4ce808d3aab
DTSTAMP:20210119T130816Z
CREATED:20201023T211106Z
DESCRIPTION:Topic: Simple Modules for SL2 via BN-Pairs\n\nSpeakers: Lars Th
orge Jensen\n\nAffiliation: Member\, School of Mathematics\n\n
DTSTART:20201027T200000Z
DTEND:20201027T220000Z
LAST-MODIFIED:20210106T232926Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-0
END:VEVENT
BEGIN:VEVENT
UID:431d3fda-005c-4b37-a662-ed89b703c77c
DTSTAMP:20210119T130816Z
CREATED:20200901T214428Z
DESCRIPTION:Topic: Stability\, testability and property (T)\n\nSpeakers: Or
en Beker\n\nAffiliation: University of Cambridge\n\nWe show that if $G=\la
ngle S | E\rangle$ is a discrete group with\nProperty (T) then $E$\, as a
system of equations over $S$\, is not\nstable (under a mild condition). Th
at is\, $E$ has approximate\nsolutions in symmetric groups $Sym(n)$\, $n \
geq 1$\, that are far from\nevery solution in $Sym(n)$ under the normalize
d Hamming metric. The\nsame is true when $Sym(n)$ is replaced by the unita
ry group $U(n)$\nwith the normalized Hilbert--Schmidt metric. We will reca
ll the\nrelevant terminology\, sketch the proof in a special case\, and ex
tend\nthe instability result to show non-testability. The discussion will
\nlead us naturally to a slightly weaker form of stability\, called\nflexi
ble stability\, and we will survey its recent study. Based on\njoint works
with Alex Lubotzky and Jonathan Mosehiff.\n
DTSTART:20201028T150000Z
DTEND:20201028T161500Z
LAST-MODIFIED:20210104T014200Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-1
END:VEVENT
BEGIN:VEVENT
UID:b186751f-2089-45b2-9abf-887ecdee622a
DTSTAMP:20210119T130816Z
CREATED:20201008T194216Z
DESCRIPTION:Topic: Derived Equivariant Cohomology of the affine Grassmannia
n and Bezrukavnikov and Finkelberg’s equivalences\n\nSpeakers: Anne Dranow
ski\n\nAffiliation: Member\, School of Mathematics\n\nThis is the third ta
lk in a series of three talks on the derived\nSatake equivalence. I will g
ive an overview of the article of\nBezrukavnikov and Finkelberg which expl
ains how the equivariant\nderived category of the affine Grassmannian can
be described in terms\nof coherent sheaves on the Langlands dual Lie algeb
ra.\n
DTSTART:20201028T190000Z
DTEND:20201028T210000Z
LAST-MODIFIED:20210104T014256Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-5
END:VEVENT
BEGIN:VEVENT
UID:2e36c161-9cf2-4120-80cd-61b14d1878d6
DTSTAMP:20210119T130816Z
CREATED:20200806T225453Z
DESCRIPTION:Topic: Wild low-rank maps\n\nSpeakers: Robert Young\n\nAffiliat
ion: New York University\; von Neumann Fellow\, School of Mathematics\n\nI
n 1979\, Kaufman constructed a remarkable surjective Lipschitz map\nfrom a
cube to a square whose derivative has rank $1$ almost\neverywhere. In thi
s talk\, we will present some higher-dimensional\ngeneralizations of Kaufm
an's construction that lead to maps with\nlow-rank derivatives and strange
properties\, including topologically\nnontrivial maps from $S^m$ to $S^n$
with derivative of rank $n-1$ and\nmaps from the disc to the disc that se
nd every closed curve to a curve\nwith signed area zero. This is joint wor
k with Stefan Wenger and Larry\nGuth.\n
DTSTART:20201028T213000Z
DTEND:20201028T230000Z
LAST-MODIFIED:20210104T014353Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-187
END:VEVENT
BEGIN:VEVENT
UID:5343abc2-cfb0-4412-86de-ce66936f0f3b
DTSTAMP:20210119T130816Z
CREATED:20201009T161510Z
DESCRIPTION:
DTSTART:20201029T140000Z
DTEND:20201029T160000Z
LAST-MODIFIED:20210104T014450Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-3
END:VEVENT
BEGIN:VEVENT
UID:2f504bd8-ecb3-4eef-a460-e5fddb9c4ee2
DTSTAMP:20210119T130816Z
CREATED:20200923T172352Z
DESCRIPTION:Topic: An explicit supercuspidal local Langlands correspondence
\n\nSpeakers: Tasho Kaletha\n\nAffiliation: University of Michigan\; von N
eumann Fellow\, School of Mathematics\n\nWe will give an explicit construc
tion and description of a\nsupercuspidal local Langlands correspondence fo
r any $p$-adic group\n$G$ that splits over a tame extension\, provided $p$
does not divide\nthe order of the Weyl group. This construction matches a
ny discrete\nLanglands parameters with trivial monodromy to an L-packet co
nsisting\nof supercuspidal representations\, and describes the internal st
ructure\nof these L-packets.\n\nThe construction has two parts. The depth-
zero part involves\ngeneralizing to disconnected groups results of Lusztig
on the\ndecomposition of a non-singular Deligne-Lusztig induction. Higher
\nmultiplicities occur in this decomposition and are handled using work\no
f Bonnafe-Dat-Rouquier. The positive-depth part involves functorial\ntrans
fer from a twisted Levi subgroup\, which is made possible by an\nimproveme
nt of Yu's construction of supercuspidal representations\nobtained in rece
nt joint work with Fintzen and Spice\, and\nconsideration of Harish-Chandr
a characters.\n\nWe will also discuss ongoing work towards related conject
ures:\nShahidi's generic L-packet conjecture\, Hiraga-Ichino-Ikeda formal
\ndegree conjecture\, stability and endoscopic transfer.\n
DTSTART:20201029T203000Z
DTEND:20201029T213000Z
LAST-MODIFIED:20210108T152327Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-426
END:VEVENT
BEGIN:VEVENT
UID:bf3cbdbd-ea36-4c74-bd1d-51a840c0eb52
DTSTAMP:20210119T130816Z
CREATED:20200901T215604Z
DESCRIPTION:Topic: Three 20 min research talks\n\nSpeakers: Simon Allais\;
Orsola Capovilla-Searle\; Julian Chaidez\n\nAffiliation: École normale sup
érieure de Lyon\; Duke University\; University of California\, Berkeley\n
\nSIMON ALLAIS (ENS LYON)\n\n_Title:__ _Generating functions in Hamiltonia
n dynamics and\nsymplectic-contact rigidity\n\n_Abstract: _Generating func
tions of Hamiltonian diffeomorphisms are\nmaps that can be seen as finite
dimensional versions of the action\nfunctional. In various situations\, cl
assical Morse theory applied to\nthem can retrieve the same information as
the Floer theory. In this\ntalk\, I will introduce this tool and expose s
ome old and new results\nof Hamiltonian dynamics and symplectic rigidity t
hat can be retrieved\nand sometimes extended using elementary Morse theory
and generating\nfunctions\; among others\, the recent theorem of Shelukhi
n about the\nHofer-Zehnder conjecture in the special case of $CP^d$ and a
contact\ngeneralization of the symplectic camel theorem.\n\nORSOLA CAPOVIL
LA-SEARLE (DUKE UNIVERSITY)\n\n_Title: _Weinstein handle decompositions of
complements of toric\ndivisors in toric 4 manifolds\n\n_Abstract: _We con
sider toric 4 manifolds with certain toric divisors\nthat have normal cros
sing singularities. The normal crossing\nsingularities can be smoothed\, c
hanging the topology of the\ncomplement. In specific cases this complement
has a Weinstein\nstructure\, and we develop an algorithm to construct a W
einstein\nhandlebody diagram of the complement of the smoothed toric divis
or.\nThe algorithm we construct more generally gives a Weinstein handlebod
y\ndiagram for Weinstein 4-manifolds constructed by attaching 2 handles\nt
o $T^*S$ for any surface $S$\, where the 2 handles are attached along\nthe
conormal lift of curves on $S$. Joint work with Bahar Acu\, Agnes\nGadble
d\, Aleksandra Marinkovic\, Emmy Murphy\, Laura Starkston and\nAngela Wu.
\n\nJULIAN CHAIDEZ (UC BERKELEY)\n\n_Title: _ECH Embedding Obstructions Fo
r Rational Surfaces\n\n_Abstract: _Is the Gromov width on toric varieties
monotonic with\nrespect to inclusions of moment polytopes? In this talk\,
I will prove\na generalization in dimension 4: the 'width' associated to a
concave\ntoric domain is monotonic with inclusion of momenty polygons. Th
is is\nan application of some new algebro-geometric obstructions for\nembe
ddings of star-shaped domains into rational surfaces. This work is\njoint
with Ben Wormleighton.\n
DTSTART:20201030T131500Z
DTEND:20201030T133500Z
LAST-MODIFIED:20210104T014643Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-46
END:VEVENT
BEGIN:VEVENT
UID:af2669e4-3705-4414-9a44-f5a5dda94251
DTSTAMP:20210119T130816Z
CREATED:20200827T131416Z
DESCRIPTION:Topic: Anti-concentration and the Gap-Hamming problem\n\nSpeake
rs: Anup Rao\n\nAffiliation: University of Washington\n\nWe prove new lowe
r bounds on the well known Gap-Hamming problem in\ncommunication complexit
y. Our main technical result is an\nanti-concentration bound for the inner
product of two independent\nrandom vectors. We show that if A\, B are arb
itrary subsets of the cube\n{±1}^n with |A| · |B| ≥ 2^(1.01n)\, and X ∈ A
and Y ∈ B are\nsampled independently and uniformly\, then the inner produc
t must\nbe anti-concentrated: it takes on any fixed value with prob
ability at\nmost O(1/sqrt(n)). In fact\, the following stronger claim hold
s: for\nany integer k\, |Pr[=k] - Pr[ = k+4]| is at most O(1/n
).\nRemarkably\, this last claim is false if 4 is replaced with an integer
\nthat is not divisible by 4. I will explain why this happens in my\ntalk.
\n\nThis is joint work with Amir Yehudayoff.\n
DTSTART:20201102T161500Z
DTEND:20201102T171500Z
LAST-MODIFIED:20210106T050529Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-465
END:VEVENT
BEGIN:VEVENT
UID:73f1d7d7-a00b-4dc7-b03b-7647c1edcba9
DTSTAMP:20210119T130816Z
CREATED:20200924T161534Z
DESCRIPTION:Topic: Metric embeddings\, uniform rectifiability\, and the Spa
rsest Cut problem\n\nSpeakers: Robert Young\n\nAffiliation: New York Unive
rsity\; von Neumann Fellow\, School of Mathematics\n\n(joint work with Ass
af Naor) A key problem in metric geometry asks:\ngiven metric spaces $X$ a
nd $Y$\, how well does $X$ embed in $Y$? In\nthis talk\, we will consider
this problem for the case of the\nHeisenberg group and explain its connect
ions to geometric measure\ntheory and computer science. The Heisenberg gro
up $H$ is a metric\nspace that is hard to embed in $\mathbb{R}^n$. Cheeger
and Kleiner\nused a metric derivative based on surfaces in $H$ to show th
at it also\nfails to embed into $L_1$. We will use uniform rectifiability
to\nanalyze surfaces in $\mathbb{H}$\, provide sharp bounds on the\ndistor
tion of embeddings of $H$ and estimate the accuracy of an\napproximate alg
orithm for the Sparsest Cut Problem.\n
DTSTART:20201102T190000Z
DTEND:20201102T200000Z
LAST-MODIFIED:20210105T112836Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-341
END:VEVENT
BEGIN:VEVENT
UID:a1e95e43-5dd2-44e7-b03e-e077de8b2f41
DTSTAMP:20210119T130816Z
CREATED:20200925T221708Z
DESCRIPTION:Topic: Falconer distance set problem using Fourier analysis\n\n
Speakers: Hong Wang\n\nAffiliation: Member\, School of Mathematics\n\nGive
n a set $E$ of Hausdorff dimension $s > d/2$ in $\mathbb{R}^d$ \,\nFalcone
r conjectured that its distance set $\Delta(E)=\{ |x-y|: x\, y\n\in E\}$ s
hould have positive Lebesgue measure. When $d$ is even\, we\nshow that $\d
im_H E>d/2+1/4$ implies $|\Delta(E)| > 0$. This improves\nupon the work of
Wolff\, Erdogan\, Du-Zhang\, etc. Our tools include\nOrponen's radial pro
jection theorem and refined decoupling estimates.\n\nThis is joint work wi
th Guth\, Iosevich\, and Ou and with Du\, Iosevich\,\nOu\, and Zhang.\n
DTSTART:20201102T213000Z
DTEND:20201102T223000Z
LAST-MODIFIED:20210105T112929Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-124
END:VEVENT
BEGIN:VEVENT
UID:86bbccbe-e3fa-4614-8627-32b054993f43
DTSTAMP:20210119T130816Z
CREATED:20200827T131741Z
DESCRIPTION:Topic: No seminar - Election Day\n\n
DTSTART:20201103T153000Z
DTEND:20201103T173000Z
LAST-MODIFIED:20210106T050621Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-460
END:VEVENT
BEGIN:VEVENT
UID:11dc0b6b-c9db-48fe-90ba-82281cb1ebce
DTSTAMP:20210119T130816Z
CREATED:20201002T172432Z
DESCRIPTION:Topic: No seminar: Election Day\n\n
DTSTART:20201103T183000Z
DTEND:20201103T203000Z
LAST-MODIFIED:20210104T014740Z
LOCATION:
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-3
END:VEVENT
BEGIN:VEVENT
UID:f8b51e49-236a-4344-a4e8-584942470368
DTSTAMP:20210119T130816Z
CREATED:20201030T132047Z
DESCRIPTION:Topic: Decomposition numbers in defining characteristic\n\nSpea
kers: Andrea Dotto\n\nAffiliation: Member\, School of Mathematics\n\nThe d
ecomposition of the reduction of a Deligne--Lusztig character as\na sum of
Weyl modules is given by Jantzen's formula. In the case of\n$SL_2(F_q)$ t
he formula can be proved by a direct computation\, and as\na result we wil
l see that the entries in the decomposition matrix are\nall 0 or 1. This m
ultiplicity-one property (or rather\, its analogue\nfor $GL_2(F_q))$ has a
pplications in number theory through the\nformulation of Breuil's lattice
conjecture\, which gives a connection\nwith Emerton's talk in this study g
roup.\n
DTSTART:20201103T210000Z
DTEND:20201103T230000Z
LAST-MODIFIED:20210106T232948Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-1
END:VEVENT
BEGIN:VEVENT
UID:959977bf-56e4-4159-8b9a-ff0f16468f2b
DTSTAMP:20210119T130816Z
CREATED:20200901T214448Z
DESCRIPTION:Topic: Stability and sofic approximations for product groups an
d property (tau)\n\nSpeakers: Adrian Ioana\n\nAffiliation: University of C
alifornia\, San Diego\n\nA countable group $G$ is called sofic if it admit
s a sofic\napproximation: a sequence of asymptotically free almost actions
on\nfinite sets. Given a sofic group $G$\, it is a natural problem to try
\nto classify all its sofic approximations and\, more generally\, its\nasy
mptotic homomorphisms to finite symmetric groups. Ideally\, one\nwould aim
to show that any almost homomorphism from $G$ to a finite\nsymmetric grou
p is close to an actual homomorphism. If this is the\ncase\, then $G$ is c
alled stable in permutations\, or P-stable. In this\ntalk\, I will first p
resent a result providing a large class of product\ngroups are not P-stabl
e. In particular\, the direct products of the\nfree group on two generator
s with itself and with the group of\nintegers are not P-stable. This impli
es that P-stability is not closed\nunder the direct product construction\,
which answers a question of\nBecker\, Lubotzky and Thom. I will also pres
ent a more recent result\,\nwhich strengthens the above in the case when $
G$ is the direct product\nof the free group on two generators with itself.
This shows\, answering\na question of Bowen\, that $G$ admits a sofic app
roximation which is\nnot essentially a “branched cover” of a sofic approxi
mation by\nhomomorphisms.\n
DTSTART:20201104T160000Z
DTEND:20201104T171500Z
LAST-MODIFIED:20210104T014836Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-2
END:VEVENT
BEGIN:VEVENT
UID:1c631a50-4bda-4e81-8c29-51918be9ae5d
DTSTAMP:20210119T130816Z
CREATED:20201008T194223Z
DESCRIPTION:Topic: The Derived Geometric Satake Equivalence of Bezrukavniko
v and Finkelberg\n\nSpeakers: Jize Yu\n\nAffiliation: Member\, School of M
athematics\n\nThis is the last talk towards understanding Bezrukavnikov-Fi
nkelberg's\nderived geometric Satake equivalence. With the preparations fr
om\nprevious talks\, we will introduce two filtrations: a topological\nfil
tration on the equivariant cohomology and an algebraic filtration\non the
Kostant functor. The comparison of these two functors will lead\nus to the
main statement of Bezrukavnikov-Finkelberg's derived\ngeometric Satake eq
uivalence.\n
DTSTART:20201104T200000Z
DTEND:20201104T220000Z
LAST-MODIFIED:20210104T014932Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-6
END:VEVENT
BEGIN:VEVENT
UID:bbd427f3-9a19-41a0-8587-4d9fc62db9fd
DTSTAMP:20210119T130816Z
CREATED:20200806T231920Z
DESCRIPTION:Topic: Three-term arithmetic progressions in sets of integers\n
\nSpeakers: Olof Sisask\n\nAffiliation: Stockholm University\n\nIt turns o
ut that certain additive patterns in the integers are very\nhard to get ri
d of. An instance of this is captured in a conjecture of\nErdős\, which st
ates that as long as a set of natural numbers is\n'somewhat dense' -- name
ly the sum of the reciprocals of its elements\ndiverges -- the set must co
ntain arbitrarily long arithmetic\nprogressions. In this talk\, I'll discu
ss recent work with Bloom where\nwe prove the simplest case of the conject
ure: finding arithmetic\nprogressions of length 3. This case has a rich hi
story\, and our work\nbuilds particularly upon that of Roth\, Bourgain and
Bateman--Katz.\nI'll aim to showcase some of this history\, and in partic
ular the\nproblem's lovely connections with harmonic analysis and convex\n
geometry.\n
DTSTART:20201104T223000Z
DTEND:20201105T000000Z
LAST-MODIFIED:20210104T015029Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-188
END:VEVENT
BEGIN:VEVENT
UID:36529bea-dd5a-4873-97a4-262f556997f5
DTSTAMP:20210119T130816Z
CREATED:20201009T161518Z
DESCRIPTION:
DTSTART:20201105T150000Z
DTEND:20201105T170000Z
LAST-MODIFIED:20210104T015126Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-4
END:VEVENT
BEGIN:VEVENT
UID:a0e9c62b-b8a2-4929-a1b6-d9b787f0ed5f
DTSTAMP:20210119T130816Z
CREATED:20200923T172356Z
DESCRIPTION:Topic: Strong approximation for the Markoff equation via nonabe
lian level structures on elliptic curves\n\nSpeakers: William Chen\n\nAffi
liation: Columbia University\n\nFollowing Bourgain\, Gamburd\, and Sarnak\
, we say that the Markoff\nequation $x^2 + y^2 + z^2 - 3xyz = 0$ satisfies
strong approximation\nat a prime $p$ if its integral points surject onto
its $F_p$ points.\nIn 2016\, Bourgain\, Gamburd\, and Sarnak were able to
establish strong\napproximation at all but a sparse (but infinite) set of
primes\, and\nconjecture that it holds at all primes. Building on their re
sults\, in\nthis talk I will explain how to obtain strong approximation fo
r all\nbut a finite and effectively computable set of primes\, thus reduci
ng\nthe conjecture to a finite computation. The key result amounts to\nest
ablishing a congruence on the degree of a certain line bundle on\nthe modu
li stack of elliptic curves with $SL(2\,p)$-structures. To make\ncontact w
ith the Markoff equation\, we use the fact that the Markoff\nsurface is a
level set of the character variety for $SL(2)$\nrepresentations of the fun
damental group of a punctured torus\, and\nthat the strong approximation c
onjecture can be expressed in terms of\nthe mapping class group action on
the character variety\, which in turn\nalso determines the geometry of the
moduli stack of elliptic curves\nwith $SL(2\,p)$-structures. As time allo
ws we will also describe a\nnumber of applications.\n
DTSTART:20201105T213000Z
DTEND:20201105T223000Z
LAST-MODIFIED:20210108T152406Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-427
END:VEVENT
BEGIN:VEVENT
UID:1520fba6-1b90-4212-a074-cf3999b330c7
DTSTAMP:20210119T130816Z
CREATED:20200901T215630Z
DESCRIPTION:Topic: Secondary coproducts in Morse and Floer homology\n\nSpea
kers: Kai Cieliebak\n\nAffiliation: University of Augsburg\n\nThis talk is
about joint work with Nancy Hingston and Alexandru\nOancea. We describe v
arious secondary coproducts on the Floer homology\nof a cotangent bundle a
nd show that\, under Viterbo's isomorphism\, they\nall correspond to the G
oresky-Hingston coproduct on loop space\nhomology. The proof uses compacti
fied moduli spaces of punctured\nholomorphic annuli.\n
DTSTART:20201106T141500Z
DTEND:20201106T154500Z
LAST-MODIFIED:20210104T015318Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-47
END:VEVENT
BEGIN:VEVENT
UID:e57d196f-c4f3-4769-ae6f-5087f086915a
DTSTAMP:20210119T130816Z
CREATED:20200820T172716Z
DESCRIPTION:Topic: Algebraic and topological models for DNA recombination\n
\nSpeakers: Nataša Jonoska\n\nAffiliation: University of South Florida\n\n
DNA rearrangement is observed at developmental and evolutionary scale.\nTh
e recombination process can be directly modeled by 4-regular graphs\nand G
auss codes\, also called double occurrence words. We discuss\nproperties o
f these graphs\, their spatial embedding and max genera. We\nillustrate th
ese models through the recombination processes in a well\nstudied ciliate
species Oxytricha trifallax where DNA recombination is\nobserved on a mass
ive scale. We use word patterns within the double\noccurrence words to inv
estigate genome-wide scrambled gene\narchitectures that describe the precu
rsor-product relationships. The\ngenome wide rearrangement can be presente
d as directed graph and the\nfirst homology can be used to detect differen
t pathways of\nrecombination. Gene segments that recombine during these pr
ocesses may\nbe organized on the chromosome in a variety of ways. They can
overlap\,\ninterleave or one may be a subsegment of another. We use color
ed\ndirected graphs to represent contigs containing scrambled segment.\nUs
ing graph properties to each graph we associate a point in a higher\ndimen
sional Euclidean space such that cluster formations and analysis\ncan be p
erformed with methods from topological data analysis. The\nanalysis shows
some emerging graph structures indicating that segments\nof a single gene
can interleave in between\, or even contain\, all of\nthe segments from se
veral other genes.\n
DTSTART:20201106T190000Z
DTEND:20201106T203000Z
LAST-MODIFIED:20210104T015415Z
LOCATION:Remote Access Only
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/math/events/workshop-topology-identifying-order-com
plex-systems-128
END:VEVENT
BEGIN:VEVENT
UID:c6b06f65-6621-4139-af96-a3705000ae22
DTSTAMP:20210119T130816Z
CREATED:20200827T124950Z
DESCRIPTION:Topic: Associativity testing\n\nSpeakers: Ben Green\n\nAffiliat
ion: University of Oxford\n\nSuppose we have a cancellative binary associa
tive operation * on a\nfinite set X. We say that it is delta-associative i
f the proportion of\ntriples x\, y\, z such that x*(y*z) = (x*y)*z is at l
east delta.\n\nGowers and Long studied somewhat associative operations\, a
nd we will\ndescribe their main result. They also suggested an example of
a\nsomewhat associative operation which they conjectured does not (in a\ns
ense I will make precise) resemble a group operation. I will describe\na p
roof of their conjecture\, which uses a surprisingly large number of\ntool
s from additive combinatorics and group theory.\n
DTSTART:20201109T161500Z
DTEND:20201109T171500Z
LAST-MODIFIED:20210106T050712Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-466
END:VEVENT
BEGIN:VEVENT
UID:88cb028a-a68e-4966-a2bf-40479101fef4
DTSTAMP:20210119T130816Z
CREATED:20200924T162029Z
DESCRIPTION:Topic: Some analogies between arithmetic and topology\n\nSpeake
rs: Tony Feng\n\nAffiliation: Member\, School of Mathematics\n\nThere are
striking analogies between topology and arithmetic algebraic\ngeometry\, w
hich studies the behavior of solutions to polynomial\nequations in arithme
tic rings. One expression of these analogies is\nthrough the theory of eta
le cohomology\, which is an algebraic version\nof topological cohomology.
I will give an introduction to this circle\nof ideas and illustrate how th
ey played the role in the recent\nresolution of a 1966 conjecture of Tate
concerning a certain duality\nin the etale cohomology of 2-dimensional var
ieties over finite fields.\nThis duality is analogous to the linking form
in topology\, and is\nanalyzed via etale versions of Steenrod operations a
nd characteristic\nclasses. (The talk will not assume any familiarity with
these\nconcepts.)\n
DTSTART:20201109T190000Z
DTEND:20201109T200000Z
LAST-MODIFIED:20210105T113023Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-342
END:VEVENT
BEGIN:VEVENT
UID:17937cf0-854b-4b6d-8630-3694796301e6
DTSTAMP:20210119T130816Z
CREATED:20200925T221713Z
DESCRIPTION:Topic: Transverse Measures and Best Lipschitz and Least Gradien
t Maps\n\nSpeakers: Karen Uhlenbeck\n\nAffiliation: University of Texas\,
Austin\; Distinguished Visiting Professor\, School of Mathematics\n\nMotiv
ated by some work of Thurston on defining a Teichmuller theory\nbased on b
est Lipschitz maps between surfaces\, we study\ninfinity-harmonic maps fro
m a manifold to a circle. The best Lipschitz\nconstant is taken on on a ge
odesic lamination. Moreover\, in the\nsurface case the dual problem leads
to a least gradient section of a\nline bundle which defines a transverse m
easure on the lamination. We\ndiscuss the construction of least gradient s
ections from transverse\nmeasures.\n\nIf time permits\, we will discuss wh
at needs to be done to understand\nthe surface to surface case.\n\n This i
s joint work with George Daskalopoulos.\n
DTSTART:20201109T213000Z
DTEND:20201109T223000Z
LAST-MODIFIED:20210105T113115Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-125
END:VEVENT
BEGIN:VEVENT
UID:5fff284e-aa6d-4763-9de0-5adb00cf44aa
DTSTAMP:20210119T130816Z
CREATED:20200827T131651Z
DESCRIPTION:Topic: Modular zeros in the character table of the symmetric gr
oup\n\nSpeakers: Sarah Peluse\n\nAffiliation: Member\, School of Mathemati
cs\n\nMiller computed the character table of $S_n$ for some fairly large n
's\nand noticed that almost all of the entries were even. Based on this\,
\nhe conjectured that the proportion of even entries in the character\ntab
le of $S_n$ tends to $1$ as $n\to\infty$. I'll present two proof of\nthis
conjecture\, one of which shows more generally that almost every\nentry of
the character table of $S_n$ is divisible by $p$ for all\nprimes $p$ up t
o $13$. Interestingly\, this proof naturally breaks down\npast $p=13$. I w
ill also discuss the problem of determining the\ndensity of zeros in the c
haracter table of $S_n$. Miller also has\ncomputational data suggesting th
at this density is a positive number\nless than $1$. No background on the
representation theory of $S_n$\nwill be assumed--since the talk is two hou
rs\, I will spend the first\npart introducing this topic.\n
DTSTART:20201110T153000Z
DTEND:20201110T173000Z
LAST-MODIFIED:20210106T050804Z
LOCATION:Remote Access Only - see link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-461
END:VEVENT
BEGIN:VEVENT
UID:981d080d-8e28-4006-872f-66fe6aee8238
DTSTAMP:20210119T130816Z
CREATED:20201002T172440Z
DESCRIPTION:Topic: Part II of talks\n\nSpeakers: Charles Weibel\, Allen Yua
n\n\nAffiliation: Rutgers University\; Member\, School of Mathematics and
Visitor\, School of Mathematics\n\nAllen and Chuck will finish their talks
.\n
DTSTART:20201110T183000Z
DTEND:20201110T203000Z
LAST-MODIFIED:20210104T015511Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-4
END:VEVENT
BEGIN:VEVENT
UID:2ee8cb32-1c93-4016-a25c-1dc0a9e668f8
DTSTAMP:20210119T130816Z
CREATED:20201109T192256Z
DESCRIPTION:Topic: Blocks and Defect Groups of SLn\n\nSpeakers: Nate Harman
\n\nAffiliation: Member\, School of Mathematics\n\nThe modular representat
ion theory of a finite group naturally breaks\ninto different pieces calle
d blocks\, and the defect of a block is a\nsort of measure of its complexi
ty. I will recall some basic aspects of\nthis theory\, and then give the c
omplete classification of blocks and\ntheir defect groups for $SL_n(\mathb
b{F}_q)$ in defining\ncharacteristic.\n
DTSTART:20201110T200000Z
DTEND:20201110T220000Z
LAST-MODIFIED:20210106T233009Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-2
END:VEVENT
BEGIN:VEVENT
UID:868fa876-2917-43c2-9ae4-7382e538a8f9
DTSTAMP:20210119T130816Z
CREATED:20200901T214521Z
DESCRIPTION:Topic: Flexible stability and nonsoficity\n\nSpeakers: Peter Bu
rton\n\nAffiliation: University of Texas at Austin\n\nA sofic approximatio
n to a countable discrete group is a sequence of\nfinite models for the gr
oup that generalizes the concept of a Folner\nsequence witnessing amenabil
ity of a group and the concept of a\nsequence of quotients witnessing resi
dual finiteness of a group. If a\ngroup admits a sofic approximation it is
called sofic. It is a well\nknown open problem to determine if every grou
p is sofic. A sofic group\n$G$ is said to be flexibly stable if every sofi
c approximation to $G$\ncan converted to a sequence of disjoint unions of
Schreier graphs on\ncoset spaces of $G$ by modifying an asymptotically van
ishing\nproportion of edges. We will discuss a joint result with Lewis Bow
en\nthat if $\mathrm{PSL}_d(\mathbb{Z})$ is flexibly stable for some $d\n\
geq 5$ then there exists a group which is not sofic.\n
DTSTART:20201111T160000Z
DTEND:20201111T171500Z
LAST-MODIFIED:20210104T021321Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-3
END:VEVENT
BEGIN:VEVENT
UID:d286ee6c-a46f-47ad-8ffd-160f05dd96bb
DTSTAMP:20210119T130816Z
CREATED:20201008T194231Z
DESCRIPTION:Topic: Iwahori-Whittaker category and geometric Casselman-Shali
ka\n\nSpeakers: Tony Feng\n\nAffiliation: Member\, School of Mathematics\n
\nThis talk will be an exposition of a recent paper of\nBezrukavnikov-Gait
sgory-Mirkovic-Riche-Rider giving an\nIwahori-Whittaker model for the Sata
ke category. The main point is\nthat their argument works for modular coef
ficients. I will give some\nmotivation via the Casselman-Shalika formula i
n the theory of $p$-adic\ngroups\, introduce the Iwahori-Whittaker model\,
and sketch the proof of\nthe equivalence.\n
DTSTART:20201111T200000Z
DTEND:20201111T220000Z
LAST-MODIFIED:20210104T021417Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-7
END:VEVENT
BEGIN:VEVENT
UID:f0799dc4-d81e-43d6-b1e3-0cabd95f42b9
DTSTAMP:20210119T130816Z
CREATED:20200806T231946Z
DESCRIPTION:Topic: Deep learning for the working mathematician\n\nSpeakers:
Carlos Tschudi Simpson\n\nAffiliation: CNRS\, Université de Nice Sophia A
ntipolis\; Visiting Professor\, School of Mathematics\n\nArtificial intell
igence or 'deep learning' is becoming ubiquitous in\nnew fields of mathema
tical applications stemming from the internet\neconomy. This has led to th
e creation of powerful new tools. We would\nlike to explore how these tech
niques can be of interest to the working\npure mathematician. We'll start
by recalling\, briefly and in a simple\nway\, what is a neural network and
how to train it. Then we'll discuss\nsome recent directions of applicatio
n in an era starting with 'Machine\nlearning (in) the String Landscape'. I
would like to highlight a\ncouple of recent applications to Gröbner bases
and the Gauss-Manin\nconnection\, and then discuss my current work on cla
ssification of\nfinite semigroups. Our main goal will be to look at the di
fferent ways\nthese techniques can be implicated in pure math problems\, l
eading off\nwith the idea of using AI to guide the creation of formalized
proofs.\n
DTSTART:20201111T223000Z
DTEND:20201112T000000Z
LAST-MODIFIED:20210104T021513Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-189
END:VEVENT
BEGIN:VEVENT
UID:ce8348cf-89e7-4acc-882e-7520d1b81db8
DTSTAMP:20210119T130816Z
CREATED:20201009T161526Z
DESCRIPTION:
DTSTART:20201112T150000Z
DTEND:20201112T170000Z
LAST-MODIFIED:20210104T021611Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-5
END:VEVENT
BEGIN:VEVENT
UID:b217aec4-a359-4ddf-9a48-397b317ab25b
DTSTAMP:20210119T130816Z
CREATED:20200923T172400Z
DESCRIPTION:Topic: Effective height bounds for odd-degree totally real poin
ts on some curves\n\nSpeakers: Levent Alpoge\n\nAffiliation: Columbia Univ
ersity\n\nLet \o be an order in a totally real field\, say F. Let K be an
\nodd-degree totally real field. Let S be a finite set of places of K.\nWe
study S-integral K-points on integral models H_\o of Hilbert\nmodular var
ieties because not only do said varieties admit complete\ncurves (thus red
ucing questions about such curves' K-rational points\nto questions about S
-integral K-points on these integral models)\, they\nalso have their S-int
egral K-points controlled by known cases of\nmodularity\, in the following
way. First assume for clarity modularity\nof all \GL_2-type abelian varie
ties over K --- then all S-integral\nK-points on H_\o arise from K-isogeny
factors of the [F:\Q]-th power\nof the Jacobian of a single Shimura curve
with level structure (by\nJacquet-Langlands transfer). By a generalizatio
n of an argument of von\nKänel\, isogeny estimates of Raynaud/Masser-Wüsth
olz and Bost's lower\nbound on the Faltings height suffice to then bound t
he heights of all\npoints in H_\o(\o_{K\,S}). As for the assumption\, thou
gh modularity is\nof course not known in this generality\, by following Ta
ylor's\n(sufficiently explicit for us) proof of his potential modularity\n
theorem we are able to make the above unconditional.\n\nFinally we use the
hypergeometric abelian varieties associated to the\narithmetic triangle g
roup \Delta(3\,6\,6) to give explicit examples of\ncurves to which the abo
ve height bounds apply. Specifically\, we prove\nthat\, for a\in \Qbar^\ti
mes totally real of odd degree (e.g. a = 1)\nand L/\Q(a) totally real of o
dd degree\, there is an effectively\ncomputable c = c_{a\,L}\in \Z^+ such
that all x\,y\in L satisfying x^6 +\n4y^3 = a^2 satisfy h(x) < c. Note tha
t this gives infinitely many\ncurves for each of which Faltings' theorem i
s now effective over\ninfinitely many number fields.\n
DTSTART:20201112T213000Z
DTEND:20201112T223000Z
LAST-MODIFIED:20210108T152447Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-428
END:VEVENT
BEGIN:VEVENT
UID:b1d1a7a8-a378-429c-a240-e984c5ed678c
DTSTAMP:20210119T130816Z
CREATED:20200901T215703Z
DESCRIPTION:Topic: Quantum cohomology as a deformation of symplectic cohomo
logy\n\nSpeakers: Nicolas Sheridan\n\nAffiliation: University of Edinburgh
\n\nLet X be a compact symplectic manifold\, and D a normal crossings\nsym
plectic divisor in X. We give a criterion under which the quantum\ncohomol
ogy of X is the cohomology of a natural deformation of the\nsymplectic coc
hain complex of X \ D. The criterion can be thought of\nin terms of the Ko
daira dimension of X (which should be non-positive)\,\nand the log Kodaira
dimension of X \ D (which should be non-negative).\nThe crucial tool is V
arolgunes' relative symplectic cohomology. This\nis joint work with Strom
Borman and Umut Varolgunes.\n
DTSTART:20201113T141500Z
DTEND:20201113T154500Z
LAST-MODIFIED:20210104T021804Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-48
END:VEVENT
BEGIN:VEVENT
UID:446175b8-bf22-4e7b-a3d3-12c985fe0d22
DTSTAMP:20210119T130816Z
CREATED:20200827T131434Z
DESCRIPTION:Topic: Indistinguishability Obfuscation from Well-Founded Assum
ptions\n\nSpeakers: Huijia (Rachel) Lin\n\nAffiliation: University of Wash
ington\n\nIndistinguishability obfuscation\, introduced by [Barak et. al.
\nCrypto’2001]\, aims to compile programs into unintelligible ones\nwhile
preserving functionality. It is a fascinating and powerful\nobject that ha
s been shown to enable a host of new cryptographic goals\nand beyond. Howe
ver\, constructions of indistinguishability obfuscation\nhave remained elu
sive\, with all other proposals relying on heuristics\nor newly conjecture
d hardness assumptions.\n\nIn this work\, we show how to construct indisti
nguishability\nobfuscation from subexponential hardness of four well-found
ed\nassumptions. We prove:\n\nTHEOREM (Informal) Let p be a prime of magni
tude \Theta(2^n)\, where n\nis the security parameter. Assume sub-exponent
ial security of the\nfollowing assumptions: \n\n1. the Learning With Erro
rs (LWE) assumption over Z_p with\nsubexponential modulus-to-noise ratio\,
\n\n2. the Learning Parity with Noise (LPN) assumption over Z_p with\npol
ynomially many LPN samples and inverse polynomial error rate\,\n\n3. the
existence of a Boolean Pseudo-Random Generator (PRG) in NC0\nwith polynomi
al stretch\,\n\n4. the Symmetric eXternal Diffie-Hellman (SXDH) assumptio
n on\nasymmetric bilinear groups of order p.\n\nThen\, (subexponentially s
ecure) indistinguishability obfuscation for\nall polynomial-size circuits
exists.\n\nFurther\, assuming only polynomial security of the aforemention
ed\nassumptions\, there exists collusion resistant public-key functional\n
encryption for all polynomial-size circuits. \n\nJoint work with Aayush Ja
in and Amit Sahai at UCLA.\n
DTSTART:20201116T161500Z
DTEND:20201116T181500Z
LAST-MODIFIED:20210106T050855Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-467
END:VEVENT
BEGIN:VEVENT
UID:14ce968f-5bec-4e26-a7ff-e747ca56c309
DTSTAMP:20210119T130816Z
CREATED:20201027T161725Z
DESCRIPTION:Topic: Theta intertwining sheaves\n\nSpeakers: Zhiwei Yun\n\nAf
filiation: Massachusetts Institute of Technology\n\nThe theta corresponden
ce of Roger Howe gives a way to connect\nrepresentations of different clas
sical groups. We aim to geometrize\nthe theta correspondence for groups ov
er finite fields in the spirit\nof Lusztig's character sheaves. Given a re
ductive dual pair $(G_1\,\nG_2)$ acting on a symplectic space $V$\, we wil
l introduce a class of\nsimple perverse sheaves on $V$\, equivariant under
the action of $G_1\n\times G_2$\, that we call theta intertwining sheaves
. Roughly\, these\nsheaves geometrize projectors onto simple constituents
of the Weil\nrepresentation under $G_1 \times G_2$. Moreover\, they induce
a\ncorrespondence between character sheaves on $G_1$ and $G_2$. Based on
\njoint work in progress with S.Gurevich\n
DTSTART:20201116T183000Z
DTEND:20201116T193000Z
LAST-MODIFIED:20201110T174226Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory
END:VEVENT
BEGIN:VEVENT
UID:70f83b38-f9ca-4aba-8aff-759780c359fd
DTSTAMP:20210119T130816Z
CREATED:20200924T162032Z
DESCRIPTION:Topic: No seminar: workshop\n\n
DTSTART:20201116T190000Z
DTEND:20201116T200000Z
LAST-MODIFIED:20210105T113206Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-343
END:VEVENT
BEGIN:VEVENT
UID:0242210c-c9a9-42c7-8d2d-4b10f7deefe4
DTSTAMP:20210119T130816Z
CREATED:20201027T161746Z
DESCRIPTION:Topic: Modular Perverse Sheaves on the affine Flag Variety\n\nS
peakers: Laura Rider\n\nAffiliation: University of Georgia\n\nThere are tw
o categorical realizations of the affine Hecke algebra:\nconstructible she
aves on the affine flag variety and coherent sheaves\non the Langlands dua
l Steinberg variety. A fundamental problem in\ngeometric representation th
eory is to relate these two categories by a\ncategory equivalence. This wa
s achieved by Bezrukavnikov in\ncharacteristic 0 about a decade ago. In th
is talk\, I will discuss a\nfirst step toward solving this problem in the
modular case joint with\nR. Bezrukavnikov and S. Riche.\n
DTSTART:20201116T200000Z
DTEND:20201116T210000Z
LAST-MODIFIED:20201029T142828Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-0
END:VEVENT
BEGIN:VEVENT
UID:4c9333d4-737a-4df9-be8e-9e14d41a8e66
DTSTAMP:20210119T130816Z
CREATED:20200925T221718Z
DESCRIPTION:Topic: On Hölder continuous globally dissipative Euler flows\n
\nSpeakers: Hyunju Kwon\n\nAffiliation: Member\, School of Mathematics\n\n
In the theory of turbulence\, a famous conjecture of Onsager asserts\nthat
the threshold Hölder regularity for the total kinetic energy\nconservatio
n of (spatially periodic) Euler flows is 1/3. In\nparticular\, there are H
ölder continuous Euler flows with Hölder\nexponent less than 1/3 exhibitin
g strict energy dissipation\, as proved\nrecently by Isett. In light of th
ese developments\, I'll discuss\nHölder continuous Euler flows which not o
nly have energy dissipation\nbut also satisfy a local energy inequality.\n
\nThis is joint work with Camillo De Lellis.\n
DTSTART:20201116T213000Z
DTEND:20201116T223000Z
LAST-MODIFIED:20210105T113259Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-126
END:VEVENT
BEGIN:VEVENT
UID:d2c16e7b-a400-46e1-80f5-2cfa0cb631e4
DTSTAMP:20210119T130816Z
CREATED:20201027T161811Z
DESCRIPTION:Topic: The integral coefficient geometric Satake equivalence in
mixed characteristic\n\nSpeakers: Jize Yu\n\nAffiliation: Member\, School
of Mathematics\n\nThe geometric Satake equivalence establishes a link bet
ween two\ncategories: the category of spherical perverse sheaves on the af
fine\nGrassmannian and the category of representations of the Langlands du
al\ngroup. It has found many important applications in the study of the\ng
eometric Langlands program and number theory. Lusztig\, Ginzburg\, and\nMi
rkovic-Vilonen pioneered the study of this equivalence in equal\ncharacter
istic. Later\, Zhu established the equivalence in the mixed\ncharacteristi
c setting for $\bar{\mathbb{Q}}_{\ell}$-coefficient\nperverse sheaves. Pet
er Scholze announced a result for the general\ncoefficient perverse sheave
s in mixed characteristic using the\nbeautiful theory of diamonds. In this
talk\, I will discuss the\nintegral coefficient geometric Satake equivale
nce in the mixed\ncharacteristic setting using a different approach.
DTSTART:20201116T213000Z
DTEND:20201116T223000Z
LAST-MODIFIED:20201029T142839Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-1
END:VEVENT
BEGIN:VEVENT
UID:ad75029f-7f17-4250-b69c-a778717e3ff3
DTSTAMP:20210119T130816Z
CREATED:20201027T161831Z
DESCRIPTION:Topic: Coherent categorification of quantum loop sl(2)\n\nSpeak
ers: Peng Shan\n\nAffiliation: Tsinghua University\; Member\, School of Ma
thematics\n\nWe explain an equivalence of categories between a module cate
gory of\nquiver Hecke algebras associated with the Kronecker quiver and a
\ncategory of equivariant perverse coherent sheaves on the nilpotent\ncone
of type A. This provides a link between two different monoidal\ncategorif
ications of the open quantum unipotent cell of affine type\n$A_1$\, one gi
ven by Kang-Kashiwara-Kim-Oh-Park in terms of quiver\nHecke algebras\, the
other given by Cautis-Williams in terms of\nequivariant perverse coherent
sheaves on affine Grassmannians. This is\na joint work with Michela Varag
nolo and Eric Vasserot.\n
DTSTART:20201117T130000Z
DTEND:20201117T140000Z
LAST-MODIFIED:20201029T142850Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-2
END:VEVENT
BEGIN:VEVENT
UID:67aab13c-f013-4ed7-9928-a9b160066c67
DTSTAMP:20210119T130816Z
CREATED:20201027T161852Z
DESCRIPTION:Topic: The Picard group of the stable module category of a fini
te group\n\nSpeakers: Jesper Grodal\n\nAffiliation: University of Copenhag
en\; Member\, School of Mathematics\n\nThe Picard group of the stable modu
le category of a finite group plays\na role in many parts of modular repre
sentation theory. It was\ncalculated when the group is an abelian $p$-grou
p\, by pioneering work\nof Dade in the 1970's\, and a classification for a
ll $p$-groups was\nobtained by Carlson-Thevenaz in the early 2000's in a s
eries of works.\nIn my talk I'll explain how to use methods from homotopy
theory and\nhigher algebra to describe this Picard group for an arbitrary
finite\ngroup $G$. Part of this talk is joint work with Tobias Barthel and
\nJoshua Hunt.\n
DTSTART:20201117T143000Z
DTEND:20201117T153000Z
LAST-MODIFIED:20201029T142904Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-3
END:VEVENT
BEGIN:VEVENT
UID:ad2ce0dd-dcf5-4514-8a33-1d037e095e4b
DTSTAMP:20210119T130816Z
CREATED:20200827T131829Z
DESCRIPTION:Topic: Factorization through L2\, Rounding and Duality\n\nSpeak
ers: Vijay Bhattiprolu\n\nAffiliation: Member\, School of Mathematics\n\nL
et X and Y be normed spaces. In functional analysis\, a ``theorem on\nfact
orization through L2'' refers to the following type of\nstatement: \n\nEve
ry bounded linear operator A mapping X to Y (i.e. sup_x\n||A(x)||_Y/||x||_
X < infinity)\, can be written as the composition\n(A=B.C) of bounded line
ar operators C mapping X to L2 and B mapping L2\nto Y. \n\nSuch factorizat
ion theorems and their variants (for various choices of\nnormed spaces X a
nd Y) are useful not only in functional analysis\n(where they were develop
ed to study norms on tensor product spaces X\n\otimes X)\, but in several
areas of computer science like discrepancy\ntheory\, communication complex
ity\, column subset selection and\noptimization. In this talk I will discu
ss a generic recipe (using\nrounding+duality) for proving factorization th
eorems. My goal is to\nprovide a streamlined exposition of a classical fac
torization theorem\nof Grothendieck and time permitting show a new factori
zation result\nwhich has applications to quadratic maximization over conve
x sets. \n\nBased on recent joint work with Euiwoong Lee and Assaf Naor.
\n
DTSTART:20201117T153000Z
DTEND:20201117T173000Z
LAST-MODIFIED:20210106T050949Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-462
END:VEVENT
BEGIN:VEVENT
UID:572cc89a-c6ef-40b9-86d1-bc501879cc41
DTSTAMP:20210119T130816Z
CREATED:20201027T161910Z
DESCRIPTION:Topic: Path isomorphisms between quiver Hecke and diagrammatic
Bott-Samelson endomorphism algebras\n\nSpeakers: Amit Hazi\n\nAffiliation:
University of London\n\nWe construct an explicit isomorphism between cert
ain truncations of\nquiver Hecke algebras and Elias-Williamson's diagramma
tic endomorphism\nalgebras of Bott-Samelson bimodules. As a corollary\, we
deduce that\nthe decomposition numbers of these algebras (including as ex
amples the\nsymmetric groups and generalised blob algebras) are equal to t
he\nassociated $p$-Kazhdan-Lusztig polynomials\, provided that the\ncharac
teristic is greater than the Coxeter number. In the special case\nof the s
ymmetric group this gives an elementary and more explicit\nproof of the ti
lting character formula of Riche-Williamson's recent\nmonograph.\n
DTSTART:20201117T160000Z
DTEND:20201117T170000Z
LAST-MODIFIED:20201029T142917Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-4
END:VEVENT
BEGIN:VEVENT
UID:032992b8-5536-4dcf-8e70-6e17bb092be4
DTSTAMP:20210119T130816Z
CREATED:20201027T161934Z
DESCRIPTION:Topic: The center of the small quantum group\n\nSpeakers: Pablo
Boixeda Alvarez\n\nAffiliation: Member\, School of Mathematics\n\n
DTSTART:20201117T173000Z
DTEND:20201117T183000Z
LAST-MODIFIED:20201029T150711Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-5
END:VEVENT
BEGIN:VEVENT
UID:335d161d-afa9-4c6c-8cda-5e6a8d479201
DTSTAMP:20210119T130816Z
CREATED:20201002T172447Z
DESCRIPTION:Topic: The covariant model structure and straightening/unstraig
htening\n\nSpeakers: John Pardon\n\nAffiliation: Princeton University\n\n
DTSTART:20201117T183000Z
DTEND:20201117T203000Z
LAST-MODIFIED:20210104T021901Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-5
END:VEVENT
BEGIN:VEVENT
UID:f0af1f48-1355-461b-8016-696fbd4d0ec2
DTSTAMP:20210119T130816Z
CREATED:20201109T192317Z
DESCRIPTION:Topic: No seminar: workshop\n\n
DTSTART:20201117T200000Z
DTEND:20201117T220000Z
LAST-MODIFIED:20210106T233030Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-3
END:VEVENT
BEGIN:VEVENT
UID:9c7e87ee-729a-4b0b-b6c4-2ece4dea9bd6
DTSTAMP:20210119T130816Z
CREATED:20200901T214545Z
DESCRIPTION:Topic: Surface groups are flexibly stable\n\nSpeakers: Nir Laza
rovich\n\nAffiliation: Technion\n\nIn this talk I will present a joint wor
k with Arie Levit and Yair\nMinsky on flexible stability of surface groups
. The proof will be\ngeometric in nature and will rely on an analysis of b
ranched covers of\nhyperbolic surfaces. Along the way we will see a quanti
tative variant\nof the LERF property for surface groups which may be of in
dependent\ninterest.\n
DTSTART:20201118T160000Z
DTEND:20201118T171500Z
LAST-MODIFIED:20210104T021956Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-4
END:VEVENT
BEGIN:VEVENT
UID:7e20e33c-7503-426d-915f-f78897b92052
DTSTAMP:20210119T130816Z
CREATED:20201027T161958Z
DESCRIPTION:Topic: 2-Verma modules\n\nSpeakers: Gregoire Naisse\, Pedro Vaz
\n\nAffiliation: University College London\; University College London\n\n
Categorification of integrable representations of quantum Kac--Moody\nalge
bras is a relatively well-developed subject nowadays\, which has\nfound se
veral applications\, in particular to low-dimensional topology.\nThe story
outside of the integrable world is far less well-known. In\nthe first par
t of this talk\, we'll explain the ideas behind\ncategorification of Verma
modules\, and how our construction is related\nto other known structures
in higher representation theory. In the\nsecond part\, we'll discuss how t
o extend the construction to tensor\nproducts involving Verma modules\, an
d some connections with\nlow-dimensional topology.\n
DTSTART:20201118T190000Z
DTEND:20201118T200000Z
LAST-MODIFIED:20201029T142928Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-6
END:VEVENT
BEGIN:VEVENT
UID:94e23c96-7b65-4e6a-99f4-150e8b6adc7f
DTSTAMP:20210119T130816Z
CREATED:20201008T194239Z
DESCRIPTION:Topic: No seminar: workshop\n\n
DTSTART:20201118T200000Z
DTEND:20201118T220000Z
LAST-MODIFIED:20210104T022054Z
LOCATION:
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-8
END:VEVENT
BEGIN:VEVENT
UID:3d1553fb-ed59-4f01-ba50-5f89dc2bbe7b
DTSTAMP:20210119T130816Z
CREATED:20201027T162026Z
DESCRIPTION:Topic: Representations on KU-modules\n\nSpeakers: David Treuman
n\n\nAffiliation: Boston College\n\nAlgebraic topologists talk about an el
evator from characteristic zero\nto characteristic p\, with infinitely man
y floors in between called\nchromatic levels. I think you could 'do repres
entation theory' at any\nof these levels. I once tried to explore the firs
t level: A\n'KU-module'\, or anyway a $p$-adically complete KU-module\, is
a level\none version of a complex vector space (at level zero) and of a\n
$Z_p$-module (at level infinity). KU is a name for topological\nK-theory\,
in the talk I'll discuss representations --- probably\,\nmostly\, of fini
te groups --- on $p$-complete KU-modules.\nRepresentations are harder to m
odel in this world but some\ncomputations are easier\, for about the same
reason that K-theory is\nsometimes easier to compute than cohomology.\n
DTSTART:20201118T203000Z
DTEND:20201118T213000Z
LAST-MODIFIED:20201029T142939Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-7
END:VEVENT
BEGIN:VEVENT
UID:84f6cd8f-7c05-4ca3-a79c-810ead1171b5
DTSTAMP:20210119T130816Z
CREATED:20201027T162047Z
DESCRIPTION:Topic: Stability and Periodicity in Modular Representation Theo
ry\n\nSpeakers: Nate Harman\n\nAffiliation: Member\, School of Mathematics
\n\nI will review certain stabilization phenomena in the characteristic\nz
ero representation theory of general linear and symmetric groups as\nthe r
ank tends to infinity. Then I will give a survey of some results\nand conj
ectures about analogs of these in the positive characteristic\nand quantum
settings\, exploring what happens as the rank tends to\ninfinity while th
e characteristic either remains fixed or grows at a\nrate comparable to th
e rank.\n
DTSTART:20201118T220000Z
DTEND:20201118T230000Z
LAST-MODIFIED:20201029T142950Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-8
END:VEVENT
BEGIN:VEVENT
UID:b665b3ca-819f-4480-aca7-6435b25ca498
DTSTAMP:20210119T130816Z
CREATED:20200806T232132Z
DESCRIPTION:Topic: Higher order Fourier analysis and generalizations of Sze
merédi's theorem\n\nSpeakers: Sarah Peluse\n\nAffiliation: Institute for A
dvanced Study and Princeton University\; Veblen Research Instructor\, Scho
ol of Mathematics\n\nSeveral of the most important problems in combinatori
al number theory\nask for the size of the largest subset of some abelian g
roup or\ninterval of integers lacking points in a fixed arithmetic\nconfig
uration. One example of such a question is\, 'What is the largest\nsubset
of $\{1\,\ldots \,N\}$ with no nontrivial $k$-term arithmetic\nprogression
s $x\,x+y\,x+2y\,...\,x+(k-1)y$?'. Gowers initiated the study\nof higher o
rder Fourier analysis while seeking to answer this question\nand used it t
o give the first reasonable quantitative bounds in 1998\nfor $k=4$ and 200
1 for all $k$. Two other examples of such questions\nare\, 'What is the la
rgest subset of $\{1\,\ldots\,N\}$ with no shifted\ngeometric progressions
of the form $x\,x+y\,x+y^2\,...\,x+y^k$?' and 'What\nis the largest subse
t of $Z/NZ \times Z/NZ$ with no four vertices of\nan axis-aligned square $
(x\,y)\, (x+d\,y)\, (x\,y+d)\, (x+d\,y+d)$'? Recent\nwork now gives a reas
onable bound for this first question\, but none is\ncurrently known for th
e second. In this talk\, I'll explain what higher\norder Fourier analysis
is and its relevance to Szemerédi's theorem\nand generalizations\, and sta
te some open questions in the area.\n
DTSTART:20201118T223000Z
DTEND:20201119T000000Z
LAST-MODIFIED:20210104T022151Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-190
END:VEVENT
BEGIN:VEVENT
UID:cebbfc54-b793-4750-988a-c8d9a1834a92
DTSTAMP:20210119T130816Z
CREATED:20201027T162107Z
DESCRIPTION:Topic: Cohomology of line bundles on flag varieties in positive
characteristic \n\nAffiliation: Sydney Mathematical Research Institute\,
The University of Sydney\; Member\, School of Mathematics\n\nLet $G$ be a
semi-simple algebraic group over an algebraically closed\nfield $k$ of pos
itive characteristic and let $B$ be a Borel subgroup.\nThe cohomology of l
ine bundles on the flag variety $G/B$ induced by\ncharacters of $B$ are im
portant objects in the representation theory\nof $G$. In this talk\, I wil
l start by briefly recalling the theory in\nzero characteristic\, which ha
s been well-understood for a long time\,\nand some important previous resu
lts in positive characteristics\, due\nto Kempf\, Griffith\, Andersen\, Ja
ntzen\, Kuhne-Hausmann\, Irving\, Doty\,\nSullivan\, Donkin\, etc. Then\,
I will present the new results for $G =\nSL_3$ obtained in my thesis. More
precisely\, I have shown the\nexistence of two filtrations of $H^i (G/B\,
\mu)$. The first exists for\n$i = 1.2$ and $\mu$ in the Griffith region.
The second\, which\ngeneralizes the $p$-filtration introduced by Jantzen\,
exists for all\n$i$ and $\mu$.\n
DTSTART:20201118T233000Z
DTEND:20201119T003000Z
LAST-MODIFIED:20201029T143002Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-9
END:VEVENT
BEGIN:VEVENT
UID:351003d4-b3b7-4116-ad48-728db3713a51
DTSTAMP:20210119T130816Z
CREATED:20201027T162128Z
DESCRIPTION:Topic: Induction of p-Cells and Localization\n\nSpeakers: Lars
Thorge Jensen\n\nAffiliation: Member\, School of Mathematics\n\nAbstract:
in joint work with Leonardo Patimo\, we investigate the\ncompatibility of
\np-cells with respect to standard parabolic subgroups. Given a p-cell\nin
\na standard parabolic subgroup of a crystallographic Coxeter system\,\non
e can induce the corresponding cell module and ask whether it\ndecomposes
into cell modules. Localization techniques allow us to\ngive an affirmativ
e answer to this question. Along the way\, we prove\nsome new positivity p
roperties of the p-canonical basis.\n\n \n
DTSTART:20201119T150000Z
DTEND:20201119T160000Z
LAST-MODIFIED:20201116T165330Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-10
END:VEVENT
BEGIN:VEVENT
UID:f4a02c19-9f10-46c8-92b3-fe6d8d0d7b5c
DTSTAMP:20210119T130816Z
CREATED:20201027T162148Z
DESCRIPTION:Topic: Reverse Plane Partitions and Modules for the Preprojecti
ve Algebra\n\nSpeakers: Anne Dranowski\n\nAffiliation: Member\, School of
Mathematics\n\nReverse plane partitions - or RPPs for short - are order re
versing\nmaps of minuscule posets in types ADE. We report on joint work in
\nprogress with Elek\, Kamnitzer\, Libman\, and Morton-Ferguson in which w
e\ngive a type independent proof that RPPs form a crystal. Moreover\, we\n
describe how the crystal structure on RPPs can be realized\ngeometrically
on Lusztig’s nilpotent variety $L$ via a bijection\nbetween RPPs and 'gene
ric' modules for the preprojective algebra. Time\npermitting we explore th
e effects of toggling and RSK on irreducible\ncomponents of $L$.\n
DTSTART:20201119T163000Z
DTEND:20201119T173000Z
LAST-MODIFIED:20201029T143026Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-11
END:VEVENT
BEGIN:VEVENT
UID:1c8223e4-47e4-46f1-a886-0d2c724a5551
DTSTAMP:20210119T130816Z
CREATED:20201027T162209Z
DESCRIPTION:Topic: Unitriangularity and Decomposition Matrices of Unipotent
Blocks\n\nSpeakers: Jay Taylor\n\nAffiliation: University of Southern Cal
ifornia\; Member\, School of Mathematics\n\nFor a finite group $G$ one has
a process of modular reduction which\ntakes a $KG$-module\, over a field
$K$ of characteristic zero\, and\nproduces a $kG$-module\, over a field $k
$ of positive characteristic.\nStarting with a simple $KG$-module its modu
lar reduction may fail to\nbe simple. The rows and columns of the decompos
ition matrix are\nlabelled by the simple $KG$-modules and simple $kG$-modu
les\nrespectively. The rows of the matrix encode the multiplicities of the
\nsimple $kG$-modules in a composition series of the corresponding\nreduce
d $KG$-module.\n\nThe decomposition matrix can be partitioned with respect
to the blocks\nof $kG$. When $G = G(\mathbb{F}_q)$ is a finite reductive
group\, such\nas the finite general linear group\, the unipotent blocks fo
rm a\nprototype for all blocks. In this talk we will present joint work wi
th\nO. Brunat and O. Dudas showing that for some ordering of the rows and
\ncolumns the decomposition matrix of the unipotent blocks has a lower\nun
itriangular shape (under some mild conditions on $q$ and the\ncharacterist
ic of $k$).\n
DTSTART:20201119T180000Z
DTEND:20201119T190000Z
LAST-MODIFIED:20201029T143037Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-12
END:VEVENT
BEGIN:VEVENT
UID:90636acb-9b4a-4944-9243-b21fdf5f910b
DTSTAMP:20210119T130816Z
CREATED:20201027T162230Z
DESCRIPTION:Topic: Generalized affine Grassmannian slices\, truncated shift
ed Yangians\, and Hamiltonian reduction\n\nSpeakers: Joel Kamnitzer\n\nAff
iliation: University of Toronto\n\nGiven a representation of a reductive g
roup\,\nBraverman-Finkelberg-Nakajima defined a Poisson variety called the
\nCoulomb branch\, using a convolution algebra construction. This variety
\ncomes with a natural deformation quantization\, called a Coulomb branch
\nalgebra. Important cases of these Coulomb branches are (generalized)\naf
fine Grassmannian slices\, and their quantizations are truncated\nshifted
Yangians. Motivated by the geometric Satake correspondence and\nthe theory
of symplectic duality/3d mirror symmetry\, we expect a\ncategorical g-act
ion on modules for these truncated shifted Yangians.\nI will explain three
results in this direction. First\, we have an\nindirect realization of th
is action\, using equivalences with\nKLRW-modules. Second\, we have a geom
etric relation between these\ngeneralized slices by Hamiltonian reduction.
Finally\, we have an\nalgebraic version of this Hamiltonian reduction whi
ch we are able to\nrelate to the first realization.\n
DTSTART:20201119T193000Z
DTEND:20201119T203000Z
LAST-MODIFIED:20201029T143048Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-13
END:VEVENT
BEGIN:VEVENT
UID:553e5e04-1696-4216-8273-798833843bf4
DTSTAMP:20210119T130816Z
CREATED:20200923T172404Z
DESCRIPTION:Topic: Ramanujan Conjecture and the Density Hypothesis\n\nSpeak
ers: Shai Evra\n\nAffiliation: Princeton University\n\nThe Generalized Ram
anujan Conjecture (GRC) for GL(n) is a central open\nproblem in modern num
ber theory. Its resolution is known to yield\nseveral important applicatio
ns. For instance\, the Ramanujan-Petersson\nconjecture for GL(2)\, proven
by Deligne\, was a key ingredient in the\nwork of Lubotzky-Phillips-Sarnak
on Ramanujan graphs. One can also\nstate analogues (Naive) Ramanujan Conj
ectures (NRC) for other\nreductive groups. However\, in the 70's Kurokawa
and\nHowe-Piatetski-Shapiro proved that the (NRC) fails even for\nquasi-sp
lit classical groups. In the 90's Sarnak-Xue put forth a\nDensity Hypothes
is version of the (NRC)\, which serves as a replacement\nof the (NRC) in a
pplications. In this talk I will describe a possible\napproach to proving
the Density Hypothesis for definite classical\ngroups\, by invoking deep a
nd recent results coming from the Langlands\nprogram: The endoscopic class
ification of automorphic representations\nof classical groups due to Arthu
r\, and the proof of the Generalized\nRamanujan-Petersson Conjecture.\n
DTSTART:20201119T213000Z
DTEND:20201119T223000Z
LAST-MODIFIED:20210108T152527Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-429
END:VEVENT
BEGIN:VEVENT
UID:ae70ceb3-1007-47fd-a03a-39a289c4f0ac
DTSTAMP:20210119T130816Z
CREATED:20200901T215726Z
DESCRIPTION:Topic: Persistence and Triangulation in Lagrangian Topology\n\n
Speakers: Paul Biran\n\nAffiliation: Eidgenössische Technische Hochschule
(ETH) Zürich\n\nTriangulated categories play an important role in symplect
ic topology.\nThe aim of this talk is to explain how to combine triangulat
ed\nstructures with persistence module theory in a geometrically\nmeaningf
ul way. The guiding principle comes from the theory of\nLagrangian cobordi
sm. The talk is based on ongoing joint work with\nOctav Cornea and Jun Zha
ng.\n
DTSTART:20201120T141500Z
DTEND:20201120T154500Z
LAST-MODIFIED:20210104T022437Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-49
END:VEVENT
BEGIN:VEVENT
UID:c91583e7-2af3-4a8b-be9a-6ec9ede2d973
DTSTAMP:20210119T130816Z
CREATED:20201009T161533Z
DESCRIPTION:
DTSTART:20201120T150000Z
DTEND:20201120T170000Z
LAST-MODIFIED:20210104T022246Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-6
END:VEVENT
BEGIN:VEVENT
UID:3c787957-aa91-497b-b743-25d9c45ed70e
DTSTAMP:20210119T130816Z
CREATED:20200820T172918Z
DESCRIPTION:Topic: Topological methods for characterizing the relationship
between polymer entanglement and viscoelasticity\n\nSpeakers: Eleni Panagi
otou\n\nAffiliation: University of Tennessee\, Chattanooga\n\nPolymers are
macromolecules that cannot cross each other without\nbreaking their bonds
. This leads to polymer chain entanglement which\ndetermines bulk viscoela
stic responses of the material. Understanding\nthe relation between entang
lement and viscoelasticity requires a\nrigorous measure of entanglement. I
n this talk we will see how tools\nfrom topology can be used to rigorously
characterize the relationship\nbetween polymer chain entanglement and bul
k viscoelastic responses.\n
DTSTART:20201120T190000Z
DTEND:20201120T203000Z
LAST-MODIFIED:20210104T022533Z
LOCATION:Remote Access Only
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/math/events/workshop-topology-identifying-order-com
plex-systems-129
END:VEVENT
BEGIN:VEVENT
UID:6c82bdfd-77a2-480e-b8d8-bfaae0e48d98
DTSTAMP:20210119T130816Z
CREATED:20201027T162255Z
DESCRIPTION:Topic: Macdonald polynomials and decomposition numbers for fini
te unitary groups\n\nSpeakers: Olivier Dudas\n\nAffiliation: Institut de m
athématiques de Jussieu–Paris Rive Gauche\n\n(work in progress with R. Rou
quier) I will present a computational\n(yet conjectural) method to determi
ne some decomposition matrices for\nfinite groups of Lie type. These matri
ces encode how ordinary\nrepresentations decompose when they are reduced t
o a field with\npositive characteristic $\ell$. There is an algorithm to c
ompute them\nfor $GL(n\,q)$ when $\ell$ is large enough\, but finding thes
e matrices\nfor other groups of Lie type is a very challenging problem.\n
\nIn this talk I will focus on the finite general unitary group\n$GU(n\,q)
$. I will first explain how one can produce a 'natural'\nself-equivalence
in the case of $GL(n\,q)$ coming from the topology of\nthe Hilbert scheme
of the complex plane. The combinatorial part of\nthis equivalence is relat
ed to Macdonald's theory of symmetric\nfunctions and gives $(q\,t)$-decomp
osition numbers. The evidence\nsuggests that the case of finite unitary gr
oups is obtained by taking\na suitable square root of that equivalence\, w
hich encodes the relation\nbetween $GU(n\,q)$ and $GL(n\,-q)$.\n
DTSTART:20201120T190000Z
DTEND:20201120T200000Z
LAST-MODIFIED:20201029T143101Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-14
END:VEVENT
BEGIN:VEVENT
UID:9c742c24-4ac3-4675-aabb-b7bc0c19df46
DTSTAMP:20210119T130816Z
CREATED:20201027T162318Z
DESCRIPTION:Topic: Real and symmetric Springer theory\n\nSpeakers: David Na
dler\n\nAffiliation: University of California\, Berkeley\n\nI'll present j
oint work with Tsao-Hsien Chen on the geometry of real\nand symmetric matr
ices. For classical groups\, we use hyperkahler\ngeometry to lift the Kost
ant-Sekiguchi correspondence to an\nequivariant homeomorphism. As an appli
cation\, we show the\nhomeomorphism matches the real Springer resolution w
ith a nearby\nregular semisimple symmetric conjugacy class.\n
DTSTART:20201120T203000Z
DTEND:20201120T213000Z
LAST-MODIFIED:20201029T143112Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-15
END:VEVENT
BEGIN:VEVENT
UID:7241feaf-0a14-4048-8456-b24ec8babd20
DTSTAMP:20210119T130816Z
CREATED:20201027T162338Z
DESCRIPTION:Topic: Curved Hecke categories\n\nSpeakers: Shotaro Makusumi\n
\nAffiliation: Columbia University\; Member\, School of Mathematics\n\nThe
Hecke algebra admits an involution which preserves the standard\nbasis an
d exchanges the canonical basis with its dual. This involution\nis categor
ified by 'monoidal Koszul duality' for Hecke categories\,\nstudied in posi
tive characteristic in my previous joint work with\nAchar\, Riche\, and Wi
lliamson. In this talk I will explain the\nfollowing rough statement: 'The
Koszul dual of the Hecke category is\nequivalent to the derived category
of bimodules for a particular\nKoszul complex in the Hecke category of the
Langlands dual.' This is\nmotivated by the curved Koszul duality of Posit
selski and Burke. If\ntime permits\, I will also discuss the connection of
this duality to a\nconjectural symmetry in link homology. Based on joint
work with Matt\nHogancamp.\n
DTSTART:20201120T220000Z
DTEND:20201120T230000Z
LAST-MODIFIED:20201029T143124Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-16
END:VEVENT
BEGIN:VEVENT
UID:9a570571-93eb-4229-be10-b208ac2c51e9
DTSTAMP:20210119T130816Z
CREATED:20201027T162402Z
DESCRIPTION:Topic: Perverse sheaves on configuration spaces\, Hopf algebras
and parabolic induction\n\nSpeakers: Mikhail Kapranov\n\nAffiliation: Kav
li Institute for the Physics and Mathematics of the Universe\, University
of Tokyo\n\nThe problem of classification of perverse sheaves on the quoti
ent\n$h/W$ for a semisimple Lie algebra $g$ has an explicit answer which\n
turns out to be related to the algebraic properties of induction and\nrest
riction operations for parabolic subalgebras in $g$. For $g=gl(n)$\nwe get
a relation between factorizing systems of perverse sheaves on\nthe symmet
ric products of the complex line and braided Hopf algebras.\nJoint work wi
th V. Schechtman.\n
DTSTART:20201120T233000Z
DTEND:20201121T003000Z
LAST-MODIFIED:20201029T143136Z
LOCATION:Wolfensohn Hall and Remote Access
SUMMARY:Virtual Workshop on Recent Developments in Geometric Representation
Theory
URL:https://www.ias.edu/math/events/virtual-workshop-recent-developments-ge
ometric-representation-theory-17
END:VEVENT
BEGIN:VEVENT
UID:f68bc1e2-866f-433e-ae54-8700c38ea127
DTSTAMP:20210119T130816Z
CREATED:20200827T131449Z
DESCRIPTION:Topic: New isoperimetric inequalities for convex bodies\n\nSpea
kers: Amir Yehudayoff\n\nAffiliation: Technion - Israel Institute of Techn
ology\n\nWhat can we say on a convex body from seeing its projections? In
the\n80s\, Lutwak introduced a collection of measurements that capture thi
s\nquestion. He called them the affine quermassintegrals. They are affine
\ninvariant analogues of the classical quermassintegrals (a.k.a.\nintrinsi
c volumes) from the Brunn-Minkowski theory. Lutwak conjectured\nthat among
all convex bodies of a given volume\, they are minimized\nprecisely on el
lipsoids. The known cases of this conjecture correspond\nto the Blaschke-S
antalo and Petty projection inequalities. Petty's\ninequality\, for exampl
e\, is a strict generalization of the classical\nisoperimetric inequality.
Our main result confirms Lutwak's\nconjecture\, including a characterizat
ion of the equality cases\, in a\nsingle unified framework. Among other th
ings\, we also prove that\nellipsoids are the only local minimizers.\n\nJo
int work with Emanuel Milman.\n
DTSTART:20201123T161500Z
DTEND:20201123T171500Z
LAST-MODIFIED:20210106T051039Z
LOCATION:Remote Access Only - see link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-468
END:VEVENT
BEGIN:VEVENT
UID:88855911-0414-46fb-8d94-84f082ca342f
DTSTAMP:20210119T130816Z
CREATED:20200924T162036Z
DESCRIPTION:Topic: Growth\, isoperimetry and Liouville property for random
walks on groups\n\nSpeakers: Anna Erschler\n\nAffiliation: École Normale S
upérieure\; Member\, School of Mathematics\n\nIn a joint work with Tianyi
Zheng we show that the growth function of\nthe first Grigorchuk group sati
sfies \[ \ln \ln v_n/\ln v_n = a\, \]\nwhere $a = \log 2/\log x$\, $x$ bei
ng a positive root of the polynomial\n$x^3-x^2-2x-4$. This is done by cons
tructing measures with controlled\ntail decay and with non-trivial Poisson
boundary. Such estimates are\nnear optimal for all Grigorchuk groups $G_w
$\, and they can be far from\nbeing optimal for some other groups. It is e
ssential that the above\nmentioned measures are infinitely supported. In c
ontrast with\nsubexponential growth groups\, where all finitely supported
measures\nhave trivial boundary\, general exponential growth groups are li
ttle\nunderstood. In a joint work with Josh Frisch we provide new criteria
\nfor solvable linear groups.\n
DTSTART:20201123T190000Z
DTEND:20201123T200000Z
LAST-MODIFIED:20210105T113352Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-344
END:VEVENT
BEGIN:VEVENT
UID:769b3905-38b2-4a69-87ae-23a892807a6a
DTSTAMP:20210119T130816Z
CREATED:20200925T221722Z
DESCRIPTION:Topic: Boundary regularity and stability for spaces with Ricci
curvature bounded below\n\nSpeakers: Elia Bruè\n\nAffiliation: Member\, Sc
hool of Mathematics\n\nAn extension of Gromov compactness theorem ensures
that any family of\nmanifolds with convex boundaries\, uniform bound on th
e dimension and\nuniform lower bound on the Ricci curvature is precompact
in the\nGromov-Hausdorff topology. In this talk\, we will describe how\nbo
undaries degenerate in the limit by studying the topological and\nrectifia
ble structure of limit spaces. This is based on a joint work\nwith Aaron N
aber and Daniele Semola.\n
DTSTART:20201123T213000Z
DTEND:20201123T223000Z
LAST-MODIFIED:20210105T113443Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-127
END:VEVENT
BEGIN:VEVENT
UID:4275aba2-e2d0-41f4-99d0-e5f8f773784d
DTSTAMP:20210119T130816Z
CREATED:20200827T131956Z
DESCRIPTION:Topic: Factorization through L2\, Rounding and Duality Part 2\n
\nSpeakers: Vijay Bhattiprolu\n\nAffiliation: Member\, School of Mathemati
cs\n\nLet X and Y be normed spaces. In functional analysis\, a ``theorem o
n\nfactorization through L2'' refers to the following type of\nstatement:
\n\nEvery bounded linear operator A mapping X to Y (i.e. sup_x\n||A(x)||_Y
/||x||_X < infinity)\, can be written as the composition\n(A=B.C) of bound
ed linear operators C mapping X to L2 and B mapping L2\nto Y. \n\nSuch fac
torization theorems and their variants (for various choices of\nnormed spa
ces X and Y) are useful not only in functional analysis\n(where they were
developed to study norms on tensor product spaces X\n\otimes X)\, but in s
everal areas of computer science like discrepancy\ntheory\, communication
complexity\, column subset selection and\noptimization. In this talk I wil
l discuss a generic recipe (using\nrounding+duality) for proving factoriza
tion theorems. My goal is to\nprovide a streamlined exposition of a classi
cal factorization theorem\nof Grothendieck and time permitting show a new
factorization result\nwhich has applications to quadratic maximization ove
r convex sets.\n\nBased on recent joint work with Euiwoong Lee and Assaf N
aor.\n
DTSTART:20201124T153000Z
DTEND:20201124T173000Z
LAST-MODIFIED:20210106T051131Z
LOCATION:Remote Access Only - see link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-463
END:VEVENT
BEGIN:VEVENT
UID:f3acc4d0-695b-4ed3-bb93-45ab47914aee
DTSTAMP:20210119T130816Z
CREATED:20201002T172455Z
DESCRIPTION:Topic: The Joyal model structure on simplicial sets and equival
ence with simplicial categories\n\nSpeakers: Linus Hamann\n\nAffiliation:
Princeton University\n\n
DTSTART:20201124T183000Z
DTEND:20201124T203000Z
LAST-MODIFIED:20210104T022629Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-6
END:VEVENT
BEGIN:VEVENT
UID:3259e7ab-25b7-497f-b84d-54cee1d83f3a
DTSTAMP:20210119T130816Z
CREATED:20201109T192336Z
DESCRIPTION:Topic: Derived Equivalences for Blocks of Cyclic Defect\n\nSpea
kers: Jay Taylor\n\nAffiliation: University of Southern California\; Membe
r\, School of Mathematics\n\n
DTSTART:20201124T200000Z
DTEND:20201124T220000Z
LAST-MODIFIED:20210106T233050Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-4
END:VEVENT
BEGIN:VEVENT
UID:07dc9ee3-c50a-4777-9be3-2f89bdeb6147
DTSTAMP:20210119T130816Z
CREATED:20200901T214606Z
DESCRIPTION:Topic: Approximations of groups\, subquotients of infinite dire
ct products and equations over groups\n\nSpeakers: Lev Glebsky\n\nAffiliat
ion: Universidad Autónoma de San Luis Potosí\n\nLet C be a class of groups
. (For example\, C is a class of all finite\ngroups\, or C is a class of a
ll finite symmetric groups.) I give a\ndefinition of approximations of a g
roup G by groups from C. For\nexample\, the groups approximable by symmetr
ic groups are\, by\ndefinition\, sofic groups.\n\nFor some classes C the f
ollowing result holds:\n\nG is approximable by C if and only if G is a sub
group of some quotient\nof a (infinite) direct product of groups from C.\n
\nIt also may be formulated using equations over groups. In the talk I\np
lan to explain this in details and discuss some related results and\nopen
questions.\n
DTSTART:20201125T160000Z
DTEND:20201125T171500Z
LAST-MODIFIED:20210104T022725Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-5
END:VEVENT
BEGIN:VEVENT
UID:7319f0a6-8b1a-4ca9-82bf-b0e5e01fd7ca
DTSTAMP:20210119T130816Z
CREATED:20201008T194246Z
DESCRIPTION:Topic: No seminar: postponed to next week\n\n
DTSTART:20201125T200000Z
DTEND:20201125T220000Z
LAST-MODIFIED:20210104T022821Z
LOCATION:
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-9
END:VEVENT
BEGIN:VEVENT
UID:e5bf8f10-a35c-48d9-94f3-480850f077dc
DTSTAMP:20210119T130816Z
CREATED:20200806T232058Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20201125T223000Z
DTEND:20201126T000000Z
LAST-MODIFIED:20210104T022918Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-191
END:VEVENT
BEGIN:VEVENT
UID:9e7e9014-07db-4c82-acea-4cdf17f721cc
DTSTAMP:20210119T130816Z
CREATED:20201009T161541Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20201126T150000Z
DTEND:20201126T170000Z
LAST-MODIFIED:20210104T023015Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-7
END:VEVENT
BEGIN:VEVENT
UID:45a1ad49-f60f-40df-b827-e327bf8565d7
DTSTAMP:20210119T130816Z
CREATED:20200923T172407Z
DESCRIPTION:Topic: No seminar: Thanksgiving\n\n
DTSTART:20201126T213000Z
DTEND:20201126T223000Z
LAST-MODIFIED:20210108T164524Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-430
END:VEVENT
BEGIN:VEVENT
UID:700b15aa-be9e-40b4-86b2-35e9d32d00f9
DTSTAMP:20210119T130816Z
CREATED:20200901T215804Z
DESCRIPTION:Topic: Three 20 minute research talks\n\nSpeakers: Yu-Wei Fan\,
Surena Hozoori\, Marcelo Atallah\n\nAffiliation: University of California
\, Berkeley\; Georgia Institute of Technology\; University of Montreal\n\n
YU-WEI FAN (BERKELEY)_\, __Shifting numbers in triangulated categories_\n_
_\n_Abstract:_ One can consider endofunctors of triangulated categories\n
as categorical dynamical systems\, and study their long term behaviors\nun
der large iterations. There are (at least) three natural invariants\nthat
one can associate to endofunctors from the dynamical perspective:\ncategor
ical entropy\, and upper/lower shifting numbers. We will recall\nsome back
ground on categorical dynamical systems and categorical\nentropy\, and int
roduce the notion of shifting numbers\, which measure\nthe asymptotic amou
nt by which an endofunctor of a triangulated\ncategory translates inside t
he category. The shifting numbers are\nanalogous to Poincare translation n
umbers. We additionally establish\nthat in some examples the shifting numb
ers provide a quasimorphism on\nthe group of autoequivalences. Joint work
with Simion Filip.\n\nSURENA HOZOORI (GEORGIA TECH)\, _Symplectic Geometry
of Anosov Flows in\nDimension 3 and Bi-Contact Topology_\n \n_Abstract:_
We give a purely contact and symplectic geometric\ncharacterization of Ano
sov flows in dimension 3 and set up a framework\nto use tools from contact
and symplectic geometry and topology in the\nstudy of questions about Ano
sov dynamics. If time permits\, we will\ndiscuss some uniqueness results f
or the underlying (bi-) contact\nstructure for an Anosov flow\, and/or a c
haracterization of Anosovity\nbased on Reeb flows.\n\nMARCELO ATALLAH (MON
TREAL) _Hamiltonian no-torsion_\n\n_Abstract:_ In 2002 Polterovich notably
showed that Hamiltonian\ndiffeomorphisms of finite order\, which we call
Hamiltonian torsion\,\nmust be trivial on closed symplectically aspherical
manifolds. We\nstudy the existence of Hamiltonian torsion and its metric
rigidity\nproperties in more general situations. First\, we extend Poltero
vich's\nresult to closed symplectically Calabi-Yau and closed negative\nmo
notone manifolds. Second\, going beyond topological constraints\, we\ndesc
ribe how Hamiltonian torsion is related to the existence of\npseudo-holomo
rphic spheres and answer a close variant of Problem 24\nfrom the introduct
ory monograph of McDuff-Salamon. Finally\, we prove\nan analogue of Newman
’s 1931 theorem for Hofer’s metric and\nViterbo’s spectral metric on the H
amiltonian group of monotone\nsymplecitc manifolds: a sufficiently small b
all around the identity\ncontains no torsion. During the talk\, I shall di
scuss the results\nabove and some of the key ingredients of their proofs.
This talk is\nbased on joint work with Egor Shelukhin.\n
DTSTART:20201127T141500Z
DTEND:20201127T154500Z
LAST-MODIFIED:20210106T024547Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-50
END:VEVENT
BEGIN:VEVENT
UID:248c8126-1057-429e-862b-5cfa38d445c4
DTSTAMP:20210119T130816Z
CREATED:20200827T125037Z
DESCRIPTION:Topic: Thresholds for Random Subspaces\, aka\, LDPC Codes Achie
ve List-Decoding Capacity\n\nSpeakers: Mary Wootters\n\nAffiliation: Stanf
ord University\n\nWhat combinatorial properties are likely to be satisfied
by a random\nsubspace over a finite field? For example\, is it likely tha
t not too\nmany points lie in any Hamming ball of fixed radius? What about
any\ncombinatorial rectangle of fixed side length? We give a simple\ncha
racterization of the threshold on the dimension below which this is\nvery
likely and above which this is very unlikely. Our motivation\ncomes from e
rror correcting codes\, and we use this characterization to\nestablish the
list-decodability of random Low Density Parity-Check\n(LDPC) codes\, up t
o list-decoding capacity.\n\nThis talk is based on the joint work with Jon
athan Mosheiff\, Nicolas\nResch\, Noga Ron-Zewi\, and Shashwat Silas.\n
DTSTART:20201130T161500Z
DTEND:20201130T171500Z
LAST-MODIFIED:20210106T051221Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-469
END:VEVENT
BEGIN:VEVENT
UID:f69568da-ac6b-4ae6-bb4e-c1cd0bde6248
DTSTAMP:20210119T130816Z
CREATED:20200924T162040Z
DESCRIPTION:Topic: Support Varieties for Modular Representations\n\nSpeaker
s: Eric M. Friedlander\n\nAffiliation: University of Southern California\;
Member\, School of Mathematics\n\nWe present an overview of elementary me
thods to study extensions of\nmodular representations of various types of
'groups'. We shall begin\nby discussing actions of an elementary abelian $
p$-group\, $E =\n(Z/p)^r$\, on finite dimensional vector spaces over a fie
ld $k$ of\ncharacteristic $p > 0$. This leads us to the broader study of t
he\nrepresentations of a restricted Lie algebra $g$ on $k$-vector spaces.
\nWe briefly mention how the questions raised and the techniques\ndevelope
d can be extended to modular representations of an arbitrary\nfinite group
scheme over $k$. We then look more closely at the context\nof modular rep
resentations of an arbitrary finite group.\n
DTSTART:20201130T190000Z
DTEND:20201130T200000Z
LAST-MODIFIED:20210105T113534Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-345
END:VEVENT
BEGIN:VEVENT
UID:3cf2d7c6-2016-43e3-97e9-f75a153c2413
DTSTAMP:20210119T130816Z
CREATED:20200925T221728Z
DESCRIPTION:Topic: Sharp nonuniqueness for the Navier-Stokes equations\n\nS
peakers: Xiaoyutao Luo\n\nAffiliation: Duke University\n\nFor the incompre
ssible Navier-Stokes equations\, classical results\nstate that weak soluti
ons are unique in the so-called\nLadyzhenskaya-Prodi-Serrin regime. A scal
ing analysis suggests that\nclassical uniqueness results are sharp\, but c
urrent nonuniqueness\nconstructions are far below the critical threshold.
In this talk\, we\nshow the nonuniqueness of weak solutions near a borderl
ine of the\nLadyzhenskaya-Prodi-Serrin regime. In particular\, we construc
t a class\nof non-Leray-Hopf weak solutions that are smooth outside a set
of\narbitrarily small Hausdorff dimension in time. Joint work with Alexey
\nCheskidov.\n
DTSTART:20201130T213000Z
DTEND:20201130T223000Z
LAST-MODIFIED:20210105T113627Z
LOCATION:Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-128
END:VEVENT
BEGIN:VEVENT
UID:ffa92bf8-6953-48b9-9093-5d4efeff44ab
DTSTAMP:20210119T130816Z
CREATED:20200827T132021Z
DESCRIPTION:Topic: Getting the most from our data\n\nSpeakers: Paul Valiant
\n\nAffiliation: Member\, School of Mathematics\n\nI will discuss techniqu
es\, structural results\, and open problems from\ntwo of my recent papers\
, in the context of a broader area of work on\nthe motivating question: 'h
ow do we get the most from our data?'\n\nIn the first part of the talk\, I
will revisit the basic statistical\nproblem of estimating the mean of a r
eal-valued distribution. I will\nintroduce an estimator with the guarantee
that 'our estimator\, on\n*any* distribution\, is as accurate as the samp
le mean is for the\nGaussian distribution of matching variance.' Crucially
\, in contrast to\nprior works\, our estimator does not require prior know
ledge of the\nvariance\, and works across the entire gamut of distribution
s with\nfinite variance\, including those without any higher moments.\nPar
ameterized by the sample size $n$\, the failure probability\n$\delta$\, an
d the variance $\sigma^2$\, our estimator is accurate to\nwithin $\sigma\c
dot(1+o(1))\sqrt{\frac{2\log\frac{1}{\delta}}{n}}$\,\nwhich is tight up to
the $1+o(1)$ factor.\n\nIn the second part of the talk I will introduce a
framework for\nstatistical estimation that leverages knowledge of how sam
ples are\ncollected but makes no distributional assumptions on the data va
lues.\nAs a motivating example: suppose one wishes to conduct an accurate
\npolitical poll of a population\, estimating the fraction of the\npopulat
ion that would answer 'yes' to a certain question\; however\, one\ndoes no
t have access to uniformly random people from the population\,\nbut instea
d only has access to a set of people S drawn from some\ndistribution D\, a
distribution on subsets of the population. For\nexample\, D could describ
e a viral process on a social network\, where\nrespondents are the - highl
y correlated - set of people that the viral\nprocess has reached by a give
n time. How can knowledge of the\ndistribution D\, combined with the actua
l sampled set S and their\nsurvey responses\, best be used to estimate the
true population mean?\nOur model encompasses the fact that people's surve
y responses may be\nintricately correlated with their probability of being
in S. We\npresent an efficient $\pi/2$ approximation to this general clas
s of\nquestions\, via a surprising connection to the Grothendieck problem.
\n
DTSTART:20201201T153000Z
DTEND:20201201T173000Z
LAST-MODIFIED:20210106T051312Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-464
END:VEVENT
BEGIN:VEVENT
UID:782d8b70-62ea-479a-8a0b-520b492b1e06
DTSTAMP:20210119T130816Z
CREATED:20201002T172503Z
DESCRIPTION:Topic: Cartesian fibrations\n\nSpeakers: Arpon Raksit\n\nAffili
ation: Stanford University\n\n
DTSTART:20201201T183000Z
DTEND:20201201T203000Z
LAST-MODIFIED:20210104T023207Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-7
END:VEVENT
BEGIN:VEVENT
UID:ca7647d7-25d9-44ec-9658-83da8795012d
DTSTAMP:20210119T130816Z
CREATED:20201109T192354Z
DESCRIPTION:Topic: The ABG Equivalence\n\nSpeakers: Pablo Boixeda Alvarez\n
\nAffiliation: Member\, School of Mathematics\n\nBroue's Conjecture for $S
L_2(\mathbb{F}_q)$ in defining\ncharacteristic\, predicts a derived equiva
lence between the principal\nblock of this group and the principal block o
f a Borel. A structurally\nsimilar equivalence exist in the case of the al
gebraic group\nrepresentations. I will give an overview of this equivalenc
e for the\nalgebraic group $SL_2$ and I compare some basic similarities be
tween\nthis and the derived equivalences for $SL_2(\mathbb{F}_p)$ presente
d\nlast week.\n
DTSTART:20201201T200000Z
DTEND:20201201T220000Z
LAST-MODIFIED:20210106T233111Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-5
END:VEVENT
BEGIN:VEVENT
UID:9a7d6589-ed76-41ce-b090-456708a0e784
DTSTAMP:20210119T130816Z
CREATED:20200901T214630Z
DESCRIPTION:Topic: Stability\, cohomology vanishing\, and non-approximable
groups\n\nSpeakers: Andreas Thom\n\nAffiliation: University of Dresden\n\n
Several well-known open questions (such as: are all groups\nsofic/hyperlin
ear?) have a common form: can all groups be approximated\nby asymptotic ho
momorphisms into the symmetric groups $Sym(n)$ (in the\nsofic case) or the
finite dimensional unitary groups $U(n)$ (in the\nhyperlinear case)? In t
he case of $U(n)$\, the question can be asked\nwith respect to different m
etrics and norms. We answers\, for the first\ntime\, one of these versions
\, showing that there exist fintely\npresented groups which are not approx
imated by $U(n)$ with respect to\nthe Frobenius nor. Our strategy is to sh
ow that some higher\ndimensional cohomology vanishing phenomena imply stab
ility\, that is\,\nevery Frobenius-approximate homomorphism into finite-di
mensional\nunitary groups is close to an actual homomorphism. This is comb
ined\nwith existence results of certain non-residually finite central\next
ensions of lattices in some simple $p$-adic Lie groups. These\ngroups act
on high rank Bruhat-Tits buildings and satisfy the needed\nvanishing cohom
ology phenomenon and are thus stable and not\nFrobenius-approximated.\n
DTSTART:20201202T160000Z
DTEND:20201202T171500Z
LAST-MODIFIED:20210104T023304Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-6
END:VEVENT
BEGIN:VEVENT
UID:976d314e-c4d8-4d69-8391-e51fd232a2ef
DTSTAMP:20210119T130816Z
CREATED:20201008T194254Z
DESCRIPTION:Topic: Geometric Satake equivalence: a historical survey\n\nSpe
akers: George Lusztig\n\nAffiliation: Massachusetts Institute of Technolog
y\; Member\, School of Mathematics\n\nBefore the 'geometric Satake equival
ence' there was a decategorified\nversion of it which however contained mo
st of its essential features.\nIn my talk I will talk about some of the id
eas which have led to this\ntheory. In particular I will explain the conne
ction with modular\nrepresentations.\n
DTSTART:20201202T200000Z
DTEND:20201202T220000Z
LAST-MODIFIED:20210104T023400Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-10
END:VEVENT
BEGIN:VEVENT
UID:fa235a84-6085-4555-b3cf-ec5ffe0756fd
DTSTAMP:20210119T130816Z
CREATED:20200806T232026Z
DESCRIPTION:Topic: Isolated points on curves\n\nSpeakers: Bianca Viray\n\nA
ffiliation: University of Washington\n\nLet $C$ be an algebraic curve over
the rational numbers\, that is\, a\n1-dimensional complex manifold that i
s defined by polynomial equations\nwith rational coefficients. A celebrate
d result of Faltings implies\nthat all algebraic points on $C$ come in fam
ilies of bounded degree\,\nwith finitely many exceptions. These exceptions
are known as isolated\npoints. We explore how these isolated points behav
e in families of\ncurves and deduce consequences for the arithmetic of ell
iptic curves.\nThis talk is on joint work with A. Bourdon\, Ö. Ejder\, Y.
Liu\, and F.\nOdumodu.\n
DTSTART:20201202T223000Z
DTEND:20201203T000000Z
LAST-MODIFIED:20210104T023456Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-192
END:VEVENT
BEGIN:VEVENT
UID:fefc428e-4c48-46eb-8333-af949e3c70c7
DTSTAMP:20210119T130816Z
CREATED:20201009T161548Z
DESCRIPTION:
DTSTART:20201203T150000Z
DTEND:20201203T170000Z
LAST-MODIFIED:20210104T023551Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-8
END:VEVENT
BEGIN:VEVENT
UID:b80d6af4-8dcd-4d56-9d2e-6e1248df3363
DTSTAMP:20210119T130816Z
CREATED:20200923T172412Z
DESCRIPTION:Topic: A unitary analogy of Friedberg-Jacquet and Guo-Jacquet p
eriods and central values of standard L functions on GL(2n)\n\nSpeakers: J
ingwei Xiao\n\nAffiliation: Institute for Advanced Study and Princeton Uni
versity\; Veblen Research Instructor\, School of Mathematics\n\nLet $G$ be
a reductive group over a number field $F$ and $H$ a\nsubgroup. Automorphi
c periods study the integrals of cuspidal\nautomorphic forms on $G$ over $
H(F)\backslash H(A_F)$. They are often\nrelated to special values of certa
in L functions. One of the most\nnotable case is when $(G\,H)=(U(n+1) \tim
es U(n)\, U(n))$\, and these\nperiods are related to central values of Ran
kin-Selberg L functions on\n$GL(n+1) \times GL(n)$. In this talk\, I will
explain my work in\nprogress with Wei Zhang that studies central values of
standard L\nfunctions on $GL(2n)$ using $(G\,H)=(U(2n)\, U(n)\times U(n))
$ and some\nvariants. I shall explain the conjecture and a relative trace
formula\napproach to study it. We prove the required fundamental lemma usi
ng a\nlimit of the Jacquet-Rallis fundamental lemma and Hironaka’s\ncharac
terization of spherical functions on the space of non degenerate\nHermitia
n matrices. Also\, the question admits an arithmetic analogy.\n
DTSTART:20201203T213000Z
DTEND:20201203T223000Z
LAST-MODIFIED:20210108T164926Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-431
END:VEVENT
BEGIN:VEVENT
UID:325c7df3-3af8-498c-8651-45f682b5b970
DTSTAMP:20210119T130816Z
CREATED:20200901T215827Z
DESCRIPTION:Topic: The singular Weinstein conjecture and the Contact/Beltra
mi mirror\n\nSpeakers: Eva Miranda\n\nAffiliation: Universitat Politècnic
a de Catalunya\n\nIn this talk\, I will address the (singular) Weinstein c
onjecture about\nthe existence of (singular) periodic orbits of Reeb vecto
r fields on\ncompact manifolds endowed with singular contact forms. Our mo
tivating\nexamples come from Celestial mechanics (restricted three-body pr
oblem)\nwhere contact topology techniques were already successful in\ndete
rmining the existence of periodic orbits (Albers-Frauenfelder-Van\nKoert-P
aternain). With the aim of completing this understanding\, we\ndeal with t
he restricted three body example by adding the so-called\n'infinity set' (
via a McGehee regularization). This induces a\nsingularity on the contact
structure which permeates the geometry and\ntopology of the problem. Hofer
's fine techniques to prove the\nWeinstein conjecture for overtwisted 3-di
mensional contact manifolds\ncan be adapted in this singular set-up under
some symmetry assumptions\nclose to the singular set (which also work for
the non-compact case).\nWe prove the existence of infinite smooth Reeb per
iodic orbits on the\n(compact) critical set of the contact form. This crit
ical set can\noften be identified with the collision set or set at infinit
y in the\nmotivating examples from Celestial mechanics. In those examples\
,\nescape trajectories can be often compactified as singular periodic\norb
its. Time permitting\, we will end up this talk proving the\nexistence of
escape orbits and generalized singular periodic orbits\nfor 3-dimensional
singular contact manifolds under some mild\nassumptions. Our theory benefi
ts in a great manner from the existence\nof a correspondence (up to repara
metrization) between Reeb and\nBeltrami vector fields (Etnyre and Ghrist)
which can be exported to\nthis singular set-up. In particular\, Uhlenbeck'
s genericity results\nfor the eigenfunctions of the Laplacian is a key poi
nt of the proof.\n\nThe contents of this talk are based on joint works wit
h Cédric Oms\nand Daniel Peralta-Salas.\n
DTSTART:20201204T141500Z
DTEND:20201204T154500Z
LAST-MODIFIED:20210104T023743Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-51
END:VEVENT
BEGIN:VEVENT
UID:40ffbba1-82eb-4ac8-9447-a904311cc31d
DTSTAMP:20210119T130816Z
CREATED:20200820T173109Z
DESCRIPTION:Topic: Raytracing and raymarching simulations of non-euclidean
geometries\n\nSpeakers: Henry Segerman\n\nAffiliation: Oklahoma State Univ
ersity\n\nI'll talk about two related projects\, with two different groups
\, both\naiming to see three-dimensional manifolds 'from the inside'. That
is\,\nwe generate images assuming that light travels along geodesics in t
he\ngeometry of the manifold. The first project\, with Rémi Coulon\,\nSabe
tta Matsumoto\, and Steve Trettel\, uses ray-marching to generate\nthe ins
ide-view in all eight Thurston geometries. I'll explain the\nray-marching
technique\, and some aspects of our implementation. The\nsecond project\,
with David Bachman\, Matthias Goerner\, and Saul\nSchleimer\, visualizes '
cohomology fractals' in hyperbolic\nthree-manifolds. These images come fro
m cohomology classes in the\nmanifold\, and are closely related to the sph
ere-filling curves\ndiscovered by Cannon and Thurston.\n
DTSTART:20201204T190000Z
DTEND:20201204T203000Z
LAST-MODIFIED:20210104T023840Z
LOCATION:Remote Access Only
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/math/events/workshop-topology-identifying-order-com
plex-systems-130
END:VEVENT
BEGIN:VEVENT
UID:c5dc9412-3260-4606-97e5-94d951878a3a
DTSTAMP:20210119T130816Z
CREATED:20200827T131517Z
DESCRIPTION:Topic: Extractor-based Approach to Proving Memory-Sample Lower
Bounds for Learning\n\nSpeakers: Sumegha Garg\n\nAffiliation: Harvard Univ
ersity\n\nA recent line of work has focused on the following question: Can
one\nprove strong unconditional lower bounds on the number of samples\nne
eded for learning under memory constraints? We study an\nextractor-based a
pproach to proving such bounds for a large class of\nlearning problems as
follows.\n\nA matrix M: A x X -> {-1\,1} corresponds to the following lear
ning\nproblem: An unknown function f in X is chosen uniformly at random. A
\nlearner tries to learn f from a stream of samples\, (a_1\, b_1)\, (a_2\,
\nb_2) ...\, where for every i\, a_i in A is chosen uniformly at random\na
nd b_i = M(a_i\,f). Assume that k\, l\, r are such that any submatrix of\n
M\, with at least 2^{-k}|A| rows and at least 2^{-l}|X| columns\, has a\nb
ias of at most 2^{-r} (extractor property).\n\nWe show that any learning a
lgorithm for the learning problem\ncorresponding to M requires either a me
mory of size at least Ω(k l)\,\nor at least 2^{Ω(r)} samples. We also exte
nd the lower bounds to a\nlearner that is allowed two passes over the stre
am of samples. In\nparticular\, we show that any two-pass algorithm for le
arning parities\nof size n requires either a memory of size Ω(n^{3/2}) or
at least\n2^{Ω(n^{1/2})} samples. An open question would be to go beyond t
hese\ntechniques to prove such memory-sample tradeoffs.\n\nJoint works wit
h Ran Raz and Avishay Tal.\n
DTSTART:20201207T161500Z
DTEND:20201207T171500Z
LAST-MODIFIED:20210106T051403Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-470
END:VEVENT
BEGIN:VEVENT
UID:d0c8cc29-b762-4921-9045-c5861868e199
DTSTAMP:20210119T130816Z
CREATED:20200924T162044Z
DESCRIPTION:Topic: NP-hard problems naturally arising in knot theory\n\nSpe
akers: Anastasiia Tsvietkova\n\nAffiliation: Rutgers University\n\nLow-dim
ensional topology and geometry have many problems with an easy\nformulatio
n\, but a hard solution. Despite our intuitive feeling that\nthese problem
s are 'hard'\, lower or upper bounds on algorithmic\ncomplexity are known
only for some of them. Recently\, several problems\nthat lie at the heart
of classical knot theory were shown to be\nNP-hard. We will discuss the pr
oblems related to unlinking and\nsplitting by crossing changes\, to Reidem
eister moves\, and to detecting\nsublinks with various properties. Based o
n joint work with Dale\nKoenig.\n
DTSTART:20201207T190000Z
DTEND:20201207T200000Z
LAST-MODIFIED:20210105T113719Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-346
END:VEVENT
BEGIN:VEVENT
UID:af9b2512-a548-47a7-8803-45653a6e3cfe
DTSTAMP:20210119T130816Z
CREATED:20200925T221737Z
DESCRIPTION:Topic: Stability of discontinuous solutions for inviscid compre
ssible flows\n\nSpeakers: Alexis Vasseur\n\nAffiliation: University of Tex
as\, Austin\n\nWe will discuss recent developments of the theory of a-cont
raction\nwith shifts to study the stability of discontinuous solutions of
\nsystems of equations modeling inviscid compressible flows\, like the\nco
mpressible Euler equation.\n
DTSTART:20201207T213000Z
DTEND:20201207T223000Z
LAST-MODIFIED:20210105T113811Z
LOCATION:Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-129
END:VEVENT
BEGIN:VEVENT
UID:12391ca3-d7cd-48f2-859a-31a68d6585e3
DTSTAMP:20210119T130816Z
CREATED:20200827T132041Z
DESCRIPTION:Topic: High Dimensional Expanders and Ramanujan Complexes\n\nSp
eakers: Alexander Lubotzky\n\nAffiliation: Hebrew University\n\nExpander g
raphs in general\, and Ramanujan graphs in particular\, have\nplayed an im
portant role in computer science and pure mathematics in\nthe last four de
cades. In recent years the area of high dimensional\nexpanders (i.e. simpl
ical complexes with properties generalizing those\nof expanding graphs) an
d Ramanujan complexes is starting to emerge.\nThe various motivations of t
his subarea will be surveyed: these\ninclude connections and applications
to cohomology and Gromov's\noverlapping problem on the pure math side and
to property testing and\nerror correcting codes on the CS side.\n
DTSTART:20201208T153000Z
DTEND:20201208T173000Z
LAST-MODIFIED:20210106T051456Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-465
END:VEVENT
BEGIN:VEVENT
UID:5ac3af31-3b56-4368-af1d-29e0c6dc936a
DTSTAMP:20210119T130816Z
CREATED:20201002T172510Z
DESCRIPTION:Topic: Cartesian model structure and marked simplicial sets\n\n
Speakers: Carlos Tschudi Simpson\n\nAffiliation: CNRS\, Université de Nice
Sophia Antipolis\; Visiting Professor\, School of Mathematics\n\n
DTSTART:20201208T183000Z
DTEND:20201208T203000Z
LAST-MODIFIED:20210104T023936Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-8
END:VEVENT
BEGIN:VEVENT
UID:af602384-10b4-4009-9d21-b3f1c39f6a46
DTSTAMP:20210119T130816Z
CREATED:20201109T192416Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20201208T200000Z
DTEND:20201208T220000Z
LAST-MODIFIED:20210106T233132Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-6
END:VEVENT
BEGIN:VEVENT
UID:915d2d6e-b19a-4ca6-8cab-e7681089ec98
DTSTAMP:20210119T130816Z
CREATED:20200901T214658Z
DESCRIPTION:Topic: Vanishing of cohomology for groups acting on buildings\n
\nSpeakers: Izhar Oppenheim\n\nAffiliation: Ben Gurion University\n\nIn hi
s seminal paper from 1973\, Garland introduced a machinery for\nproving va
nishing of group cohomology for groups acting on Bruhat-Tits\nbuildings. T
his machinery\, known today as “Garland’s method”\,\nhad several applicati
ons as a tool for proving rigidity results (e.g.\,\nproving Kazhdan proper
ty (T) or\, more recently\, group stability\nresults). In my talk\, I will
introduce a variation of Garland’s\nmethod\, explain how it yields vanish
ing cohomology and how it can be\ngeneralized to vanishing of cohomology w
ith Banach coefficients. Parts\nof this talk are based on joint works with
Z. Grinbaum-Reizis and A.\nLubotzky.\n
DTSTART:20201209T160000Z
DTEND:20201209T171500Z
LAST-MODIFIED:20210104T024032Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-7
END:VEVENT
BEGIN:VEVENT
UID:969304e3-3d1a-4d18-9225-5dbe389d95ab
DTSTAMP:20210119T130816Z
CREATED:20201008T194301Z
DESCRIPTION:Topic: Lefschetz operators\, Hodge-Riemann forms\, and represen
tations\n\nSpeakers: Peter Fiebig\n\nAffiliation: Friedrich-Alexander-Univ
ersität Erlangen-Nürnberg\; Member\, School of Mathematics\n\nMotivated by
a formal similarity between the Hard Lefschetz theorem\nand the geometric
Satake equivalence we study vector spaces that are\ngraded by a weight la
ttice and are endowed with linear operators in\nsimple root directions. We
allow field coefficients in characteristics\ndifferent from 2. In the cas
e that a “Hodge-Riemann form” exists\,\nthe operators (and the grading) yi
eld a semisimple representation of\nthe associated Lie algebra. We then ex
plore the analogous theory with\nthe field replaced by the ring of p-adic
integers. In this setup we\nobtain tilting modules for the associated alge
braic group.\n
DTSTART:20201209T200000Z
DTEND:20201209T220000Z
LAST-MODIFIED:20210104T024130Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-11
END:VEVENT
BEGIN:VEVENT
UID:28b69f07-3963-4140-9745-a1330b0c3d1c
DTSTAMP:20210119T130816Z
CREATED:20200806T232156Z
DESCRIPTION:Topic: Determinants\, hyperbolicity\, and interlacing\n\nSpeake
rs: Cynthia Vinzant\n\nAffiliation: North Carolina State University\; von
Neumann Fellow\, School of Mathematics\n\nHyperbolic polynomials are a mul
tivariate generalization of\nreal-rooted polynomials that originated in th
e study of partial\ndifferential equations and have since found applicatio
ns in many other\nfields\, including operator theory\, optimization\, and
combinatorics.\nOne motivating example comes from the determinant of a sym
metric\nmatrix\, and many fundamental properties of eigenvalues can be der
ived\nfrom this more general context. In this talk\, I will survey some of
\nthe beautiful geometry underlying these polynomials and a sampling of\nt
heir applications.\n
DTSTART:20201209T223000Z
DTEND:20201210T000000Z
LAST-MODIFIED:20210104T024227Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-193
END:VEVENT
BEGIN:VEVENT
UID:6623e527-568c-4706-bed3-1bdfbcd4a147
DTSTAMP:20210119T130816Z
CREATED:20201009T161556Z
DESCRIPTION:
DTSTART:20201210T150000Z
DTEND:20201210T170000Z
LAST-MODIFIED:20210104T024324Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-9
END:VEVENT
BEGIN:VEVENT
UID:92589f32-2bd5-4a2f-85dd-df50a739f8a0
DTSTAMP:20210119T130816Z
CREATED:20200923T172415Z
DESCRIPTION:Topic: On the Liouville function at polynomial arguments\n\nSpe
akers: Joni Teräväinen\n\nAffiliation: University of Oxford\n\nLet $\lambd
a$ be the Liouville function and $P(x)$ any polynomial that\nis not a squa
re. An open problem formulated by Chowla and others asks\nto show that the
sequence $\lambda(P(n))$ changes sign infinitely\noften. We present a sol
ution to this problem for new classes of\npolynomials $P$\, including any
product of linear factors or any\nproduct of quadratic factors of a certai
n type. The proofs also\nestablish some nontrivial cancellation in Chowla
and Elliott type\ncorrelation averages.\n
DTSTART:20201210T213000Z
DTEND:20201210T223000Z
LAST-MODIFIED:20210108T165006Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-432
END:VEVENT
BEGIN:VEVENT
UID:c33b0b28-750e-408f-aabc-09c4aebe053a
DTSTAMP:20210119T130816Z
CREATED:20200901T215902Z
DESCRIPTION:Topic: Hierarchies of contact manifolds via rational SFT\n\nSpe
akers: Zhengyi Zhou\n\nAffiliation: Member\, School of Mathematics\n\nI wi
ll explain the construction of a functor from the exact symplectic\ncobord
ism category to a totally ordered set\, which measures the\ncomplexity of
the contact structure. Those invariants are derived from\na bi-Lie infinit
y formalism of the rational SFT and a partial\nconstruction of the rationa
l SFT. In this talk\, I will focus on the\nconstruction and properties of
the functor. Time permitting\, I will\nexplain applications\, computations
\, and relations to the involutive\nbi-Lie infinity formalism of the full
SFT. This is joint work with\nAgustin Moreno.\n
DTSTART:20201211T141500Z
DTEND:20201211T154500Z
LAST-MODIFIED:20210104T024516Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-52
END:VEVENT
BEGIN:VEVENT
UID:285c998b-d3e6-4ee4-a91c-c658780e5852
DTSTAMP:20210119T130816Z
CREATED:20201208T192803Z
DESCRIPTION:
DTSTART:20201211T150000Z
DTEND:20201211T170000Z
LAST-MODIFIED:20210106T041154Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-10
END:VEVENT
BEGIN:VEVENT
UID:f298bdc1-e8f0-494c-99b9-4a9c1f6e551b
DTSTAMP:20210119T130816Z
CREATED:20201201T134245Z
DESCRIPTION:Topic: Status of experiments and simulations on scaling problem
s in turbulence\n\nSpeakers: Katepalli Sreenivasan\n\nAffiliation: New Yor
k University\n\nAbstract: We present an elementary summary of known result
s\, and open\nquestions\, on scaling problems in hydrodynamic turbulence i
n three\ndimensions. The goal is to provide some background for the two ta
lks\nto follow\, and summarize Victor Yakhot's theory\, depending on the\n
time available.\n\nReferences: Area rule for circulation and minimal surfa
ces in\nthree-dimensional turbulence\, Kartik P. Iyer\n[https://nam02.safe
links.protection.outlook.com/?url=https%3A%2F%2Furldefense.proofpoint.com%
2Fv2%2Furl%3Fu%3Dhttps-3A__arxiv.org_search_physics-3Fsearchtype-3Dauthor-
26query-3DIyer-252C-2BK-2BP%26d%3DDwMDaQ%26c%3DslrrB7dE8n7gBJbeO0g-IQ%26r%
3DiNCm7lO-9WXa6rTFEuBmBT7aFBJrSm22E5XtOJUImGI%26m%3DIa5zHvandX6fB8PInGuQyQ
VvNjebT9HxXUwyJiLrphI%26s%3DI6rhi-zoTBbruvafwJTzqYwZV8XalgZZscjLW_gr6rw%26
e%3D&data=04%7C01%7Ceyink%40jhu.edu%7C7f7b507dae254240532e08d89558f9eb%7C9
fa4f438b1e6473b803f86f8aedf0dec%7C0%7C0%7C637423556671511075%7CUnknown%7CT
WFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0
%3D%7C1000&sdata=M79vJ0T6G7U7cMXNPfHSy%2FxChb8YeCeuTOXush8hzXE%3D&reserved
=0]\, Sachin\nS. Bharadwaj\n[https://nam02.safelinks.protection.outlook.co
m/?url=https%3A%2F%2Furldefense.proofpoint.com%2Fv2%2Furl%3Fu%3Dhttps-3A__
arxiv.org_search_physics-3Fsearchtype-3Dauthor-26query-3DBharadwaj-252C-2B
S-2BS%26d%3DDwMDaQ%26c%3DslrrB7dE8n7gBJbeO0g-IQ%26r%3DiNCm7lO-9WXa6rTFEuBm
BT7aFBJrSm22E5XtOJUImGI%26m%3DIa5zHvandX6fB8PInGuQyQVvNjebT9HxXUwyJiLrphI%
26s%3DvBfFgbhGGL_v29LpTEAc5Jkm1il_1OQzT9R1cSzy6Es%26e%3D&data=04%7C01%7Cey
ink%40jhu.edu%7C7f7b507dae254240532e08d89558f9eb%7C9fa4f438b1e6473b803f86f
8aedf0dec%7C0%7C0%7C637423556671521066%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4
wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=WrDae
rVelqHuEs0CCM2pRRf6cRzwD4YUPtvs2fxHOs8%3D&reserved=0]\, Katepalli\nR. Sree
nivasan\n[https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%
2Furldefense.proofpoint.com%2Fv2%2Furl%3Fu%3Dhttps-3A__arxiv.org_search_ph
ysics-3Fsearchtype-3Dauthor-26query-3DSreenivasan-252C-2BK-2BR%26d%3DDwMDa
Q%26c%3DslrrB7dE8n7gBJbeO0g-IQ%26r%3DiNCm7lO-9WXa6rTFEuBmBT7aFBJrSm22E5XtO
JUImGI%26m%3DIa5zHvandX6fB8PInGuQyQVvNjebT9HxXUwyJiLrphI%26s%3DDkBOL3HQeoD
K2-n186vh_bY9BKEhZ4h6RpuesvwwArM%26e%3D&data=04%7C01%7Ceyink%40jhu.edu%7C7
f7b507dae254240532e08d89558f9eb%7C9fa4f438b1e6473b803f86f8aedf0dec%7C0%7C0
%7C637423556671521066%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoi
V2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=wvNrikYmjJhBSWts%2FkQs
ECRmVc4YFec2W2sqZM6yg6g%3D&reserved=0]\, arXiv:2007.06723\; Scaling\nexpon
ents saturate in three-dimensional isotropic turbulence\, K. P.\nIyer\, K.
Sreenivasan\, P. K. Yeung\, Phys. Rev. Fluids.5.054605\n[https://nam02.sa
felinks.protection.outlook.com/?url=https%3A%2F%2Furldefense.proofpoint.co
m%2Fv2%2Furl%3Fu%3Dhttps-3A__doi.org_10.1103_PhysRevFluids.5.054605%26d%3D
DwMDaQ%26c%3DslrrB7dE8n7gBJbeO0g-IQ%26r%3DiNCm7lO-9WXa6rTFEuBmBT7aFBJrSm22
E5XtOJUImGI%26m%3DIa5zHvandX6fB8PInGuQyQVvNjebT9HxXUwyJiLrphI%26s%3DDZ8Ac5
XRiqg_3GW9uPHA6AKiJmJUzOSWqjUBJGERL5w%26e%3D&data=04%7C01%7Ceyink%40jhu.ed
u%7C7f7b507dae254240532e08d89558f9eb%7C9fa4f438b1e6473b803f86f8aedf0dec%7C
0%7C0%7C637423556671531068%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJ
QIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=mYpbfSUznna9kOazb
IPrmoBnFecbUHedrwguxVUCvwU%3D&reserved=0]\;\nV. Yakhot\, preprint\n
DTSTART:20201211T183000Z
DTEND:20201211T191500Z
LAST-MODIFIED:20201204T212111Z
LOCATION:Virtual Event via Zoom
SUMMARY:Workshop on Turbulence
URL:https://www.ias.edu/math/events/workshop-turbulence
END:VEVENT
BEGIN:VEVENT
UID:7864af5a-aa97-41b4-b561-7e04ebfe26a0
DTSTAMP:20210119T130816Z
CREATED:20201201T175027Z
DESCRIPTION:Topic: Fluid Turbulence\, Thermal Noise and Spontaneous Stochas
ticity\n\nSpeakers: Gregory Eyink\n\nAffiliation: Johns Hopkins University
\n\nAbstract: I will explain that incompressible Navier-Stokes is the\nwro
ng equation to describe turbulence in low Mach number molecular\nfluids be
cause it neglects the effects of thermal noise. There\nshould\, in fact\,
be strong effects of thermal noise throughout the\ndissipation range. Ther
mal noise will manifest itself also in the\ninertial-range dynamics\, with
the detailed large-scale flow depending\nupon the particular realization
of the molecular noise in just a few\nlarge-eddy turnover times. This is d
ue to the phenomenon of\n'spontaneous stochasticity'. We will discuss a re
normalization group\napproach to calculate the spontaneous statistics\, th
eir universality\ndomains and the finite Reynolds-number corrections. \n
\nG. L. Eyink & D. Bandak\, “A Renormalization Group Approach to\nSpontane
ous Stochasticity”\, Physical Review Research\, 2\, 043161\n(2020)\, http
s://arxiv.org/abs/2007.01333\n[https://urldefense.proofpoint.com/v2/url?u=
https-3A__arxiv.org_abs_2007.01333&d=DwMGaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=iNC
m7lO-9WXa6rTFEuBmBT7aFBJrSm22E5XtOJUImGI&m=8MBGQQ0JId9xlihTG1eRmk5rZjKGZvu
vtGUG2qC3mOE&s=5shJ66xIlZSDDIMpAhByHFV_GYmIpqsCoBfccVn3k2s&e=]\n
DTSTART:20201211T193000Z
DTEND:20201211T201500Z
LAST-MODIFIED:20201207T131524Z
LOCATION:Virtual Event via Zoom
SUMMARY:Workshop on Turbulence
URL:https://www.ias.edu/math/events/workshop-turbulence-1
END:VEVENT
BEGIN:VEVENT
UID:54393032-5b44-407b-9002-7537ddde8db1
DTSTAMP:20210119T130816Z
CREATED:20201201T174324Z
DESCRIPTION:Topic: Turbulence as Gibbs Statistics of Vortex Sheets\n\nSpeak
ers: Alexander Migdal\n\nAffiliation: New York University\n\nAbstract: We
study the vortex sheet solutions of the Euler equation\,\nwhich correspond
to the tangent discontinuity of the velocity field.\n\nWe observe that st
ationary flows correspond to the Hamiltonian's\nminimization by the tangen
t discontinuity density Γ. This\nobservation means that the stationary flo
w represents the\nlow-temperature limit of Gibbs distribution of the vorte
x dynamics. An\ninfinite number of Euler conservation laws leads to a dege
nerate\nvacuum of this system\, which degeneracy explains the complexity o
f the\nturbulent statistics and provides the relevant degrees of freedom\n
(random surfaces).\n\nWe find an exact analytic solution with a spherical
surface. This\nsolution provides an example of the instanton advocated in
our recent\nwork\, which is supposed to be responsible for the dissipation
in the\nNavier-Stokes equation in the turbulent limit of vanishing viscos
ity\nat fixed energy flow. We further conclude that one can obtain the\ntu
rbulent statistics from the Gibbs statistics of vortex sheets by\nadding L
agrange multipliers for the conserved volume inside closed\nsurfaces\, ene
rgy pumping\, and energy dissipation via viscosity anomaly\nin the enstrop
hy. The effective temperature in our Gibbs distribution\ngoes to zero as $
\nu^{\frac{2}{5}}$ in the turbulent limit\, which\nopens the way for the q
uantitative theory of turbulence as\nlow-temperature expansion in this Gib
bs ensemble around minimal\nsurfaces.\n\nThe instantons correspond to doma
in walls bounded by strings\, studied\nin cosmology\, and observed in liqu
id Helium. They are known to be\ntopologically stable.\n\n \n
DTSTART:20201211T203000Z
DTEND:20201211T211500Z
LAST-MODIFIED:20201207T131444Z
LOCATION:Virtual Event via Zoom
SUMMARY:Workshop on Turbulence
URL:https://www.ias.edu/math/events/workshop-turbulence-0
END:VEVENT
BEGIN:VEVENT
UID:87d7c95e-c856-48bd-8a81-14ed96c1a6e0
DTSTAMP:20210119T130816Z
CREATED:20200924T162048Z
DESCRIPTION:Topic: A Feynman Approach to Dynamic Rate Markov Processes\n\nS
peakers: William A. Massey\n\nAffiliation: Princeton University\; Member\,
School of Mathematics\n\nPhysics inspired mathematics helps us understand
the random evolution\nof Markov processes. For example\, the Kolmogorov f
orward and backward\ndifferential equations that govern the dynamics of Ma
rkov transition\nprobabilities are analogous to the Schrodinger and Heisen
berg pictures\nof quantum mechanics.\n\nRichard Feynman introduced a time-
ordered operator calculus that\ncreated a third framework for quantum mech
anics and incorporates the\ntwo older quantum pictures. Applying these tec
hniques to\ntime-inhomogeneous Markov processes creates a transition proba
bility\nanalysis that reveals their fundamental sample path structure.\nMo
reover\, this interpretation can motivate a time-inhomogeneous\,\nasymptot
ic generalization of steady state analysis.\n
DTSTART:20201214T190000Z
DTEND:20201214T200000Z
LAST-MODIFIED:20210105T113903Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-347
END:VEVENT
BEGIN:VEVENT
UID:889fda2a-1da1-4d08-9048-e0d8710bd628
DTSTAMP:20210119T130816Z
CREATED:20200925T221742Z
DESCRIPTION:Topic: The singular set in the Stefan problem\n\nSpeakers: Joaq
uim Serra\n\nAffiliation: Eidgenössische Technische Hochschule Zürich\n\nT
he Stefan problem\, dating back to the XIX century\, aims to describe\nthe
evolution of a solid-liquid interface\, typically a block of ice\nmelting
in water. A celebrated work of Luis Caffarelli from the 1970's\nestablish
ed that the ice-water interface must be an analytic surface\noutside of a
certain closed set: the so-called singular set. This\nsingular set was onl
y known to be contained in a surface of class\n$C^1$ and it could be\, a p
riori\, as large as the regular set. I will\npresent a recent joint work w
ith A. Figalli and X. Ros-Oton in which\nwe obtain new delicate bounds on
the size (Hausdorff dimension) of the\nsingular set in the Stefan problem.
\n
DTSTART:20201214T213000Z
DTEND:20201214T223000Z
LAST-MODIFIED:20210105T113955Z
LOCATION:Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-130
END:VEVENT
BEGIN:VEVENT
UID:b2454760-d63b-42ea-b2a5-90ba88b84972
DTSTAMP:20210119T130816Z
CREATED:20201002T172517Z
DESCRIPTION:Topic: (Homotopy) limits and colimits\n\nSpeakers: Tony Feng\n
\nAffiliation: Member\, School of Mathematics\n\n
DTSTART:20201215T183000Z
DTEND:20201215T203000Z
LAST-MODIFIED:20210104T024613Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-9
END:VEVENT
BEGIN:VEVENT
UID:b0d799e1-cf30-46fe-84f5-00b1f3ff3306
DTSTAMP:20210119T130816Z
CREATED:20201109T192435Z
DESCRIPTION:Topic: Cohomology: qualitative and stable results\n\nSpeakers:
Eric M. Friedlander\n\nAffiliation: University of Southern California\; Me
mber\, School of Mathematics\n\nWe survey work over the last 50 years adva
ncing our understandingof\ncohomology of groups. We begin with results of
Daniel Quillen which\nhave influenced all that follows. We mention stabili
ty results of\nCline\, Parshall\, Scott\, and van der Kallen relating the
rational\ncohomology of a simple algebraic group $G$ defined over a finite
field\nk and the cohomology of associated finite groups $G(K)$ of $K$-poi
nts\nof $G$ for $K/k$ finite. We proceed to discuss cohomology in the\ncat
egory of (strict polynomial) functors\, especially joint work with\nAndrei
Suslin\, leading to many stable computations of cohomology. Time\npermitt
ing\, we shall mention various basic properties which remain to\nbe proved
. For example\, unanswered questions abound about the rational\ncohomology
of the Heisenberg group $U_3$ and its associated finite\ngroups $U_3(k)$.
\n
DTSTART:20201215T200000Z
DTEND:20201215T220000Z
LAST-MODIFIED:20210106T233152Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-7
END:VEVENT
BEGIN:VEVENT
UID:1c10f84f-87fa-45c8-87aa-4b25a3751353
DTSTAMP:20210119T130816Z
CREATED:20200901T214718Z
DESCRIPTION:Topic: Hilbert-Schmidt stability of groups via C*-algebras\n\nS
peakers: Tatiana Shulman\n\nAffiliation: Polish Academy of Science\n\nThe
aim of this talk is to show that C*-algebras are useful for\nstudying stab
ility of groups. In particular we will discuss some\nobstructions for Hilb
ert-Schmidt stability of groups\, obtain a\ncomplete characterization of H
ilbert-Schmidt stability for amenable\ngroups in terms of characters\, and
discuss some examples of amenable\nand non-amenable Hilbert-Schmidt stabl
e groups. If time permits we\nalso will consider certain modifications of
Hilbert-Schmidt stability\nwhen matrices are replaced by elements of von N
eumann factors\, as well\nas a relation between Hilbert-Schmidt stability
and operator\nnorm-stability. All necessary information on C*-algebras wil
l be given\nduring the talk. The talk is mostly based on joint works with
Don\nHadwin.\n
DTSTART:20201216T160000Z
DTEND:20201216T171500Z
LAST-MODIFIED:20210104T024709Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-8
END:VEVENT
BEGIN:VEVENT
UID:8f12f7e7-ffc8-4de4-8687-5d75174bcddd
DTSTAMP:20210119T130816Z
CREATED:20201008T194309Z
DESCRIPTION:Topic: Hecke category via derived convolution formalism\n\nSpea
kers: Dima Arinkin\n\nAffiliation: University of Wisconsin–Madison\n\nThe
talk is about convolution in the setting of geometric\nrepresentation theo
ry. What are its formal properties? As a starting\npoint\, let $G$ be a gr
oup and let $D(G)$ be the derived category of\nconstructible sheaves on it
. Convolution turns $D(G)$ into a monoidal\ncategory\, which is rigid (eve
ry object is dualizable) if and only if\n$G$ is proper (this statement is
due to Boyarchenko and Drinfeld).\n\nIn this talk\, I develop the formalis
m of convolution using the\nlanguage of derived algebraic geometry\, and t
hen apply these\ntechniques to the (spherical) Hecke category and related
objects.\n
DTSTART:20201216T200000Z
DTEND:20201216T220000Z
LAST-MODIFIED:20210104T024805Z
LOCATION:Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-12
END:VEVENT
BEGIN:VEVENT
UID:35d0c9d7-6f2f-487e-810e-76f730864ee1
DTSTAMP:20210119T130816Z
CREATED:20200806T232220Z
DESCRIPTION:Topic: The perceptron problem\n\nSpeakers: Nike Sun\n\nAffiliat
ion: Massachusetts Institute of Technology\n\nIn high dimensions\, what do
es it look like when we take the\nintersection of a set of random half-spa
ces with either the sphere or\nthe Hamming cube? This is one phrasing of t
he so-called perceptron\nproblem\, whose study originated with a toy model
of a very simple\nneural network. In this talk I will survey the (non-rig
orous) physics\nsolution from the 70s and 80s\, and some more recent mathe
matical\nprogress.\n
DTSTART:20201216T223000Z
DTEND:20201217T000000Z
LAST-MODIFIED:20210104T024901Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-194
END:VEVENT
BEGIN:VEVENT
UID:4e86440f-effa-42bd-8999-62bad6ac57aa
DTSTAMP:20210119T130816Z
CREATED:20201009T161603Z
DESCRIPTION:
DTSTART:20201217T150000Z
DTEND:20201217T170000Z
LAST-MODIFIED:20210106T041236Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-11
END:VEVENT
BEGIN:VEVENT
UID:d70867ab-028f-49c9-88f9-2feb6ff9c053
DTSTAMP:20210119T130816Z
CREATED:20200923T172421Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20201217T213000Z
DTEND:20201217T223000Z
LAST-MODIFIED:20210108T165047Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-433
END:VEVENT
BEGIN:VEVENT
UID:96e313f2-826d-471f-bab6-77a730559680
DTSTAMP:20210119T130816Z
CREATED:20201209T213321Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20201218T141500Z
DTEND:20201218T154500Z
LAST-MODIFIED:20210106T020606Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-53
END:VEVENT
BEGIN:VEVENT
UID:c0490cca-f178-43c8-b798-4c1fee13d754
DTSTAMP:20210119T130816Z
CREATED:20200110T165522Z
DESCRIPTION:
DTSTART:20201218T230000Z
DTEND:20201218T230000Z
LAST-MODIFIED:20210104T025150Z
LOCATION:
SUMMARY:IAS School of Mathematics Term I Ends
URL:https://www.ias.edu/math/events/ias-school-mathematics-term-i-ends
END:VEVENT
BEGIN:VEVENT
UID:c3f21db0-d6e7-4d0e-a4d0-079a6b44929e
DTSTAMP:20210119T130816Z
CREATED:20200110T165737Z
DESCRIPTION:
DTSTART:20210111T140000Z
DTEND:20210111T140000Z
LAST-MODIFIED:20210104T025344Z
LOCATION:
SUMMARY:IAS School of Mathematics Term II Begins
URL:https://www.ias.edu/math/events/ias-school-mathematics-term-ii-begins
END:VEVENT
BEGIN:VEVENT
UID:d960a495-6047-4fa3-8da8-4524cbe3d2ce
DTSTAMP:20210119T130816Z
CREATED:20200924T162052Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20210111T190000Z
DTEND:20210111T200000Z
LAST-MODIFIED:20210105T200113Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-348
END:VEVENT
BEGIN:VEVENT
UID:40089f69-8c39-4159-8712-51043d77326c
DTSTAMP:20210119T130816Z
CREATED:20210105T210127Z
DESCRIPTION:Topic: The ground state energy of dilute Bose gases\n\nSpeakers
: Soeren Fournais\n\nAffiliation: Aarhus University\; Member\, School of M
athematics\n\nThe rigorous calculation of the ground state energy of dilut
e Bose\ngases has been a challenging problem since the 1950s. In particula
r\,\nit is of interest to understand the extent to which the Bogoliubov\np
airing theory correctly describes the ground state of this physical\nsyste
m. In this talk I will report on a recent proof of the second\nterm in the
energy expansion for dilute gases\, the so-called\nLee-Huang-Yang term\,
and its relation to Bogoliubov theory.\n
DTSTART:20210111T213000Z
DTEND:20210111T223000Z
LAST-MODIFIED:20210111T151308Z
LOCATION:Simonyi 101 and Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-131
END:VEVENT
BEGIN:VEVENT
UID:c8b43914-1eb8-4648-aade-d2284c6845a2
DTSTAMP:20210119T130816Z
CREATED:20210105T220654Z
DESCRIPTION:Topic: Presheaves and the Yoneda lemma\n\nSpeakers: Robin Carli
er\n\nAffiliation: École normale supérieure de Lyon\n\n
DTSTART:20210112T183000Z
DTEND:20210112T203000Z
LAST-MODIFIED:20210105T230611Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-10
END:VEVENT
BEGIN:VEVENT
UID:e689c324-cd30-43ab-9ace-d5d0439ae69d
DTSTAMP:20210119T130816Z
CREATED:20210106T220848Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20210112T200000Z
DTEND:20210112T220000Z
LAST-MODIFIED:20210107T173704Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-8
END:VEVENT
BEGIN:VEVENT
UID:e09351b4-c4de-4899-b073-a3c6cdadfc27
DTSTAMP:20210119T130816Z
CREATED:20200901T214744Z
DESCRIPTION:Topic: The PCP theorem\, locally testable codes\, and property
testing\n\nSpeakers: Irit Dinur\n\nAffiliation: Weizmann Institute of Scie
nce\n\nIn this lecture I will describe the three concepts appearing in the
\ntitle and how they connect with each other.
DTSTART:20210113T160000Z
DTEND:20210113T171500Z
LAST-MODIFIED:20210113T140916Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-9
END:VEVENT
BEGIN:VEVENT
UID:6cf9e732-1053-46d2-bf08-c98eeaaaf71a
DTSTAMP:20210119T130816Z
CREATED:20210106T001607Z
DESCRIPTION:Topic: Introduction to Smith theory\n\nSpeakers: Tony Feng\n\nA
ffiliation: Member\, School of Mathematics\n\nSmith theory is a type of eq
uivariant localization with respect to a\ncyclic group of prime order $p$\
, with coefficients in a field of the\nsame characteristic $p$. It has bee
n the source of various recent\nadvances in modular representation theory
and mod $p$ Langlands\nfunctoriality\, some of which will be discussed lat
er in the seminar. I\nwill give an introduction to the basic formalism.\n
DTSTART:20210113T200000Z
DTEND:20210113T220000Z
LAST-MODIFIED:20210108T010218Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-13
END:VEVENT
BEGIN:VEVENT
UID:9e96ad97-fa7c-433d-b424-4ec3a817eb1e
DTSTAMP:20210119T130816Z
CREATED:20200806T232258Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20210113T223000Z
DTEND:20210114T000000Z
LAST-MODIFIED:20210108T190203Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-195
END:VEVENT
BEGIN:VEVENT
UID:0ad7d546-da61-458a-b27e-ec8c22042e13
DTSTAMP:20210119T130816Z
CREATED:20201210T012943Z
DESCRIPTION:
DTSTART:20210114T150000Z
DTEND:20210114T170000Z
LAST-MODIFIED:20210106T041336Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-12
END:VEVENT
BEGIN:VEVENT
UID:5207b22d-a172-41db-a35a-e6b7d232180b
DTSTAMP:20210119T130816Z
CREATED:20210106T005948Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20210114T213000Z
DTEND:20210114T223000Z
LAST-MODIFIED:20210108T165126Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-434
END:VEVENT
BEGIN:VEVENT
UID:34d9406b-dbb8-411a-9845-d5eedcf10942
DTSTAMP:20210119T130816Z
CREATED:20210106T020827Z
DESCRIPTION:Topic: Symplectic implosion\n\nSpeakers: Lisa Jeffrey\n\nAffili
ation: University of Toronto\n\nSymplectic implosion was developed to solv
e the problem that the\nsymplectic cross-section of a Hamiltonian $K$-spac
e is usually not\nsymplectic\, when $K$ is a compact Lie group. The symple
ctic implosion\nis a stratified symplectic space\, introduced in a 2002 pa
per of the\nspeaker with Guillemin and Sjamaar. I survey some examples sho
wing how\nsymplectic implosion has been used. I describe the universal imp
loded\ncross-section\, which is the imploded cross-section of the cotangen
t\nbundle of a compact Lie group. Imploded cross-sections are normally\nno
t smooth manifolds. We describe some invariants (for example\nintersection
homology) which replace homology for singular stratified\nspaces. (Joint
work with Sina Zabanfahm)
DTSTART:20210115T141500Z
DTEND:20210115T154500Z
LAST-MODIFIED:20210115T145201Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-54
END:VEVENT
BEGIN:VEVENT
UID:6983dc15-c357-4c78-a3b0-9aaed7b239fd
DTSTAMP:20210119T130816Z
CREATED:20200924T162057Z
DESCRIPTION:Topic: No seminar: MLK Jr. Day\n\n
DTSTART:20210118T190000Z
DTEND:20210118T200000Z
LAST-MODIFIED:20210105T200133Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-349
END:VEVENT
BEGIN:VEVENT
UID:47ff3c79-b15d-4553-806a-557e830dba01
DTSTAMP:20210119T130816Z
CREATED:20210105T211830Z
DESCRIPTION:Topic: No seminar: MLK Jr. Day\n\n
DTSTART:20210118T213000Z
DTEND:20210118T223000Z
LAST-MODIFIED:20210106T192826Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-132
END:VEVENT
BEGIN:VEVENT
UID:1f018896-86dc-4426-b169-cdef5f1ef1bf
DTSTAMP:20210119T130816Z
CREATED:20210105T221531Z
DESCRIPTION:Topic: Adjoint functors\n\nSpeakers: Emanuel Reinecke\n\nAffili
ation: Member\, School of Mathematics\n\n
DTSTART:20210119T183000Z
DTEND:20210119T203000Z
LAST-MODIFIED:20210105T224957Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-11
END:VEVENT
BEGIN:VEVENT
UID:b77cb5ed-7f45-4894-91ad-0d3c09b52c53
DTSTAMP:20210119T130816Z
CREATED:20210106T221901Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210119T200000Z
DTEND:20210119T220000Z
LAST-MODIFIED:20210106T233233Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-9
END:VEVENT
BEGIN:VEVENT
UID:b4d48e08-4091-4fb4-909a-a9f394d0e5a3
DTSTAMP:20210119T130816Z
CREATED:20210105T232236Z
DESCRIPTION:Topic: Stability and Invariant Random Subgroups\n\nSpeakers: He
nry Bradford\n\nAffiliation: Cambridge University\n\nDetermining whether o
r not a given finitely generated group is\npermutation stable is in genera
l a difficult problem. In this talk we\ndiscuss work of Becker\, Lubotzky
and Thom which gives\, in the case of\namenable groups\, a necessary and s
ufficient condition for permutation\nstability in terms of the invariant r
andom subgroups (IRSs) of the\ngroup. We outline some ideas from the proof
of this criterion\, give an\nintroduction to IRSs in general\, and show h
ow they yield new families\nof examples of stable and unstable groups.
DTSTART:20210120T160000Z
DTEND:20210120T171500Z
LAST-MODIFIED:20210112T202044Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-10
END:VEVENT
BEGIN:VEVENT
UID:24b9be8f-56d8-47e4-bf8b-d79ace569018
DTSTAMP:20210119T130816Z
CREATED:20210106T002831Z
DESCRIPTION:Topic: The linkage principle and the tilting character formula
via Smith-Treumann theory\n\nSpeakers: Daniel Juteau\n\nAffiliation: CNRS\
, Université Paris Diderot\; Member\, School of Mathematics\n\nThe linkage
principle says that the category of representations of a\nreductive group
$G$ in positive characteristic decomposes into\n'blocks' controlled by th
e affine Weyl group. We will discuss the\nbeautiful geometric proof of thi
s result that Simon Riche and Geordie\nWilliamson obtained by applying Smi
th-Treumann theory to the\nIwahori-Whittaker model of the Satake category.
.. and\, as a bonus\, a\ntilting character formula valid for all dominant
weights and all\ncharacteristics!\n
DTSTART:20210120T200000Z
DTEND:20210120T220000Z
LAST-MODIFIED:20210113T223826Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-14
END:VEVENT
BEGIN:VEVENT
UID:13f25ea6-8aff-4647-9274-14d8ed17a143
DTSTAMP:20210119T130816Z
CREATED:20210106T004649Z
DESCRIPTION:Topic: No seminar\n\n
DTSTART:20210120T223000Z
DTEND:20210121T000000Z
LAST-MODIFIED:20210108T190256Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-196
END:VEVENT
BEGIN:VEVENT
UID:1fb0513a-5653-4661-8f46-35d9d7e46ff6
DTSTAMP:20210119T130816Z
CREATED:20201210T012957Z
DESCRIPTION:
DTSTART:20210121T150000Z
DTEND:20210121T170000Z
LAST-MODIFIED:20210106T041435Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-13
END:VEVENT
BEGIN:VEVENT
UID:b411e256-21c2-4cb9-9b17-5ef93fba02d9
DTSTAMP:20210119T130816Z
CREATED:20210107T003220Z
DESCRIPTION:Topic: Introduction to quantized enveloping algebras\n\nSpeaker
s: Leonardo Maltoni\n\nAffiliation: Sorbonne University\n\nThis talk cover
s Chapters 4 and 5 in Jantzen's book.\n
DTSTART:20210121T210000Z
DTEND:20210121T230000Z
LAST-MODIFIED:20210113T220906Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar
END:VEVENT
BEGIN:VEVENT
UID:853252d7-e8c4-443d-b79a-cd8a6c49de16
DTSTAMP:20210119T130816Z
CREATED:20210106T010644Z
DESCRIPTION:Topic: Ax-Lindemann-Weierstrass Theorem (ALW) for Fuchsian auto
morphic functions\n\nSpeakers: Joel Nagloo\n\nAffiliation: City University
of New York\n\nOver the last decades\, following works around the Pila-Wi
lkie counting\ntheorem in the context of o-minimality\, there has been a s
urge in\ninterest around functional transcendence results\, in part due to
their\nconnection with special points conjectures. A prime example is Pil
a's\nmodular ALW Theorem and its role in his proof of the André-Oort\nconj
ecture.\n\nIn this talk we will discuss how an entirely new approach\, usi
ng the\nmodel theory of differential fields\, can be used to prove the\nAx
-Lindemann-Weierstrass (ALW) Theorem with derivatives for Fuchsian\nautomo
rphic functions - a direct generalization of Pila’s ALW\ntheorem. We will
also explain how new cases of the André-Pink\nconjecture can be obtained u
sing this new approach. This is joint work\nwith G. Casale and J. Freitag.
\n
DTSTART:20210121T213000Z
DTEND:20210121T223000Z
LAST-MODIFIED:20210115T152647Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-435
END:VEVENT
BEGIN:VEVENT
UID:937be3dd-27be-49d7-bc91-59893ab82247
DTSTAMP:20210119T130816Z
CREATED:20210106T021753Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Başak Gürel\n\nAffiliation:
University of Central Florida\n\n
DTSTART:20210122T141500Z
DTEND:20210122T154500Z
LAST-MODIFIED:20210106T025845Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-55
END:VEVENT
BEGIN:VEVENT
UID:b1d0d796-b480-447f-adc1-b02ba6b73cd6
DTSTAMP:20210119T130816Z
CREATED:20201102T125150Z
DESCRIPTION:Topic: An Improved Exponential-Time Approximation Algorithm for
Fully-Alternating Games Against Nature\n\nSpeakers: Andrew Drucker\n\nAff
iliation: University of Chicago\n\n'Games against Nature' [Papadimitriou '
85] are two-player games of\nperfect information\, in which one player's m
oves are made randomly.\nEstimating the value of such games (i.e.\, winnin
g probability under\noptimal play by the strategic player) is an important
goal in the\nstudy of decision-making under uncertainty. The problem's\n
PSPACE-completeness does not rule out non-trivial algorithms\, a goal\nful
filled in certain cases by Littman\, Majercik\, and Pitassi [LMP\n'01]. \n
\nWe study the case in which the players strictly alternate with binary\nm
oves\, for which [LMP '01] does not give a general speedup. We give a\nran
domized algorithm to approximate the value of such games (and to\nproduce
near-optimal play) . Our algorithm achieves exponential\nsavings over brut
e-force\, making 2^{(1-delta)n} queries to the input\ngame's lookup table
for some absolute constant delta > 0\, and\ncertifies a lower bound on the
game value with exponentially-small\nexpected additive error. (On the dow
nside\, delta is tiny and the\nalgorithm uses exponential space.)\n\nOur a
lgorithm is recursive\, and bootstraps a 'base-case' algorithm for\nfixed-
size inputs. The base-case algorithm and the form of recursive\ncompositio
n used are interesting and\, we feel\, likely to find uses\nbeyond the pre
sent work.\n
DTSTART:20210125T161500Z
DTEND:20210125T171500Z
LAST-MODIFIED:20210115T131316Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-471
END:VEVENT
BEGIN:VEVENT
UID:728c9099-cbd8-4b81-b316-431596d77ddf
DTSTAMP:20210119T130816Z
CREATED:20201209T231542Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Ruixiang Zhang\n\nAffiliati
on: University of Wisconsin-Madison\; Member\, School of Mathematics\n\n
DTSTART:20210125T190000Z
DTEND:20210125T200000Z
LAST-MODIFIED:20210105T202523Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-350
END:VEVENT
BEGIN:VEVENT
UID:7dc53177-24fd-4cb8-9b59-ec5d74f66cee
DTSTAMP:20210119T130816Z
CREATED:20210105T211845Z
DESCRIPTION:Topic: Bogoliubov theory for trapped Bose-Einstein condensates
\n\nSpeakers: Benjamin Schlein\n\nAffiliation: University of Zurich\n\nWe
consider systems of $N$ particles interacting through a repulsive\npotenti
al in the Gross-Pitaevskii regime. We prove complete\nBose-Einstein conden
sation and we determine the form of the low-energy\nspectrum\, in the limi
t of large $N$. Our results confirm the\npredictions of Bogoliubov theory.
This talk is based on joint works\nwith C. Boccato\, C. Brennecke and S.
Cenatiempo.\n
DTSTART:20210125T213000Z
DTEND:20210125T223000Z
LAST-MODIFIED:20210106T191226Z
LOCATION:Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-133
END:VEVENT
BEGIN:VEVENT
UID:af82e87e-c8cd-4cbe-8222-d6e8ea84e011
DTSTAMP:20210119T130816Z
CREATED:20201105T141350Z
DESCRIPTION:Topic: Log-concave polynomials in theory and applications\n\nSp
eakers: Cynthia Vinzant\n\nAffiliation: Member\, School of Mathematics\n\n
A polynomial with nonnegative coefficients is strongly log-concave if\nit
and all of its derivatives are log-concave as functions on the\npositive o
rthant. This rich class of polynomials includes many\ninteresting examples
\, such as homogeneous real stable polynomials and\nmixed volume polynomia
ls of convex bodies. Its structure is intimately\nrelated to combinatorial
objects called matroids and generalized\npermutahedra. This theory gives
powerful tools for showing discrete\nlog-concavity of finite sequences. Di
stributions coming from the\ncoefficients of such polynomials can also be
approximately sampled. In\nthis talk I will go over the structural propert
ies of this rich class\nof real polynomials and discuss applications in co
mbinatorics and\ncomputer science.\n\nThis talk is based on joint work wit
h Nima Anari\, Kuikui Liu and\nShayan Oveis Gharan.\n
DTSTART:20210126T153000Z
DTEND:20210126T173000Z
LAST-MODIFIED:20210115T155206Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-466
END:VEVENT
BEGIN:VEVENT
UID:02b11f89-d712-4eef-a0e5-b7888bc4df2d
DTSTAMP:20210119T130816Z
CREATED:20210105T221548Z
DESCRIPTION:Topic: Accessible and presentable ∞-categories\n\nSpeakers: Sop
hie Morel\n\nAffiliation: École normale supérieure de Lyon\n\n
DTSTART:20210126T183000Z
DTEND:20210126T203000Z
LAST-MODIFIED:20210105T225018Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-12
END:VEVENT
BEGIN:VEVENT
UID:bf77500a-a6f1-4361-b170-0b385a5318bd
DTSTAMP:20210119T130816Z
CREATED:20210106T221918Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210126T200000Z
DTEND:20210126T220000Z
LAST-MODIFIED:20210106T233253Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-10
END:VEVENT
BEGIN:VEVENT
UID:d0740b0c-0817-4abe-8e76-92317b1c5ade
DTSTAMP:20210119T130816Z
CREATED:20210105T233015Z
DESCRIPTION:Topic: Stability of amenable groups via ergodic theory\n\nSpeak
ers: Arie Levit \n\nAffiliation: Yale University\n\nI will describe how ba
sic ergodic theory can be used to prove that\ncertain amenable groups are
stable. I will demonstrate our method by\nshowing that lamplighter groups
are stable. Another uncountably\ninfinite family to which our method appli
es are the so-called B.H.\nNeumann groups. This is the first construction
of an uncountable\nfamily of stable groups. The talk is based on joint wor
k with Alex\nLubotzky\, relying on the Invariant-Random-Subgroup criterion
for\nstability developed by Becker-Lubotzky-Thom.
DTSTART:20210127T160000Z
DTEND:20210127T171500Z
LAST-MODIFIED:20210106T000816Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-11
END:VEVENT
BEGIN:VEVENT
UID:d25da243-e957-4918-9498-e7a8b5687329
DTSTAMP:20210119T130816Z
CREATED:20210106T002850Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210127T200000Z
DTEND:20210127T220000Z
LAST-MODIFIED:20210106T002857Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-15
END:VEVENT
BEGIN:VEVENT
UID:a3b7149a-36d0-44ab-9bb4-4098c82819ca
DTSTAMP:20210119T130816Z
CREATED:20210106T004707Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210127T223000Z
DTEND:20210128T000000Z
LAST-MODIFIED:20210106T004715Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-197
END:VEVENT
BEGIN:VEVENT
UID:045e6bb1-dd8d-4d06-840e-2bbaf251b277
DTSTAMP:20210119T130816Z
CREATED:20201210T013011Z
DESCRIPTION:
DTSTART:20210128T150000Z
DTEND:20210128T170000Z
LAST-MODIFIED:20210106T041533Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-14
END:VEVENT
BEGIN:VEVENT
UID:dd323801-a170-4812-9253-bc9a518bd496
DTSTAMP:20210119T130816Z
CREATED:20201208T195814Z
DESCRIPTION:Topic: Exponential Exact Algorithms for NP Complete Problems\n
\nSpeakers: Or Zamir\n\nAffiliation: Member\, School of Mathematics\n\n
DTSTART:20210128T200000Z
DTEND:20210128T201500Z
LAST-MODIFIED:20210115T201227Z
LOCATION:Remote access - TBA
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/math/events/short-talks-postdoctoral-members-532
END:VEVENT
BEGIN:VEVENT
UID:ebecfd00-db90-4a04-8a9a-0280f0e78695
DTSTAMP:20210119T130816Z
CREATED:20201208T195549Z
DESCRIPTION:Topic: Distribution properties of Hodge and Tate loci.\n\nSpeak
ers: Salim Tayou\n\nAffiliation: Member\, School of Mathematics\n\n
DTSTART:20210128T202000Z
DTEND:20210128T203500Z
LAST-MODIFIED:20210115T134036Z
LOCATION:Remote access - TBA
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/math/events/short-talks-postdoctoral-members-531
END:VEVENT
BEGIN:VEVENT
UID:c058881e-7719-49d9-8f1e-b2cafdc6a7ee
DTSTAMP:20210119T130816Z
CREATED:20201208T194912Z
DESCRIPTION:Topic: Cohomology of Arithmetic Groups and Endoscopy\n\nSpeaker
s: Mathlide Gerbelli-Gauthier\n\nAffiliation: Member\, School of Mathemati
cs\n\n
DTSTART:20210128T204000Z
DTEND:20210128T205500Z
LAST-MODIFIED:20210115T152329Z
LOCATION:Remote access - TBA
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/math/events/short-talks-postdoctoral-members-530
END:VEVENT
BEGIN:VEVENT
UID:3af11319-7d6e-4565-8837-a7f85029f25b
DTSTAMP:20210119T130816Z
CREATED:20210107T004824Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210128T210000Z
DTEND:20210128T230000Z
LAST-MODIFIED:20210107T004833Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-0
END:VEVENT
BEGIN:VEVENT
UID:ac59619b-fe81-4330-96dc-66eaa681e4f7
DTSTAMP:20210119T130816Z
CREATED:20210106T010706Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210128T213000Z
DTEND:20210128T223000Z
LAST-MODIFIED:20210108T165245Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-436
END:VEVENT
BEGIN:VEVENT
UID:dff4b7a4-bb91-4101-a2d3-d2e0c5be3033
DTSTAMP:20210119T130816Z
CREATED:20210106T021810Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Three 20 min research talks
\n\n
DTSTART:20210129T141500Z
DTEND:20210129T154500Z
LAST-MODIFIED:20210106T025914Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-56
END:VEVENT
BEGIN:VEVENT
UID:f3fb482a-d889-425b-841c-1e547ae8a753
DTSTAMP:20210119T130816Z
CREATED:20201102T131735Z
DESCRIPTION:Topic: Graph Density Inequalities\, Sums of Squares and Tropica
lization\n\nSpeakers: Annie Raymond\n\nAffiliation: University of Massachu
setts Amherst\n\nEstablishing inequalities among graph densities is a cent
ral pursuit\nin extremal graph theory. One way to certify the nonnegativit
y of a\ngraph density expression is to write it as a sum of squares or as
a\nrational sum of squares. In this talk\, we will explore how one does so
\nand we will then identify simple conditions under which a graph\ndensity
expression cannot be a sum of squares or a rational sum of\nsquares. Trop
icalization will play a key role for the latter.\n\nThis is joint work wit
h Greg Blekherman\, Mohit Singh\, and Rekha\nThomas.\n
DTSTART:20210201T161500Z
DTEND:20210201T171500Z
LAST-MODIFIED:20210113T161557Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-472
END:VEVENT
BEGIN:VEVENT
UID:12f33aa6-2b35-4109-8490-0ef43496ba91
DTSTAMP:20210119T130816Z
CREATED:20201209T231555Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Paul Valiant\n\nAffiliation
: Brown University\; von Neumann Fellow\, School of Mathematics\n\n
DTSTART:20210201T190000Z
DTEND:20210201T200000Z
LAST-MODIFIED:20210105T202544Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-351
END:VEVENT
BEGIN:VEVENT
UID:cfec6d97-cefd-4255-bb92-9a61e780ee9c
DTSTAMP:20210119T130816Z
CREATED:20210105T211902Z
DESCRIPTION:Topic: Index theorems for nodal count and a lateral variation p
rinciple\n\nSpeakers: Gregory Berkolaiko\n\nAffiliation: Texas A&M Univers
ity\n\nOur study is motivated by earlier results about nodal count of\nLap
lacian eigenfunctions on manifolds and graphs that share the same\nflavor:
a normalized nodal count is equal to the Morse index of a\ncertain energy
functional at the critical point given by the\neigenfunction in question
(the precise meaning of the 'normalized\ncount' and the 'energy functional
' depends on the setting of the\nproblem). In the hindsight\, in all these
results\, the nodal count can\nbe understood as the spectral shift obtain
ed by perturbing the\noperator in an appropriate way. This brings us to th
e following\ngeneral result: the spectral shift can be recovered as the st
ability\nindex of the eigenvalue with respect to small 'lateral' variation
s of\nthe perturbation. Based on joint work with Y. Canzani\, G. Cox\, P.
\nKuchment and J. Marzuola\, as well as earlier work with R. Band\, Y.\nCo
lin de Verdiere\, H. Raz\, U. Smilansky and T. Weyand.\n
DTSTART:20210201T213000Z
DTEND:20210201T223000Z
LAST-MODIFIED:20210106T192140Z
LOCATION:Remote Access
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-134
END:VEVENT
BEGIN:VEVENT
UID:cabe187f-3f99-4f20-93b7-df633582112f
DTSTAMP:20210119T130816Z
CREATED:20201105T141632Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Cynthia Vinzant\n\nAffiliation: Member\
, School of Mathematics\n\n
DTSTART:20210202T153000Z
DTEND:20210202T173000Z
LAST-MODIFIED:20201207T043021Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-467
END:VEVENT
BEGIN:VEVENT
UID:acd99a1b-4e5a-40bc-92c8-dcfe01b87f07
DTSTAMP:20210119T130816Z
CREATED:20210105T221607Z
DESCRIPTION:Topic: ∞-topoi\n\nSpeakers: Ian Coley\n\nAffiliation: Rutgers U
niversity\n\n
DTSTART:20210202T183000Z
DTEND:20210202T203000Z
LAST-MODIFIED:20210105T230640Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-13
END:VEVENT
BEGIN:VEVENT
UID:054567ea-a8d0-4acd-a83f-b9b8a3c09a71
DTSTAMP:20210119T130816Z
CREATED:20210106T221933Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210202T200000Z
DTEND:20210202T220000Z
LAST-MODIFIED:20210106T233311Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-11
END:VEVENT
BEGIN:VEVENT
UID:d2d1b655-8cc5-47bb-8d37-8e670eb86aec
DTSTAMP:20210119T130816Z
CREATED:20210105T233030Z
DESCRIPTION:Topic: Permutation stability of Grigorchuk groups\n\nSpeakers:
Tianyi Zheng\n\nAffiliation: University of California\, San Diego\n\nA rec
ent result of Becker\, Lubotzky and Thom characterizes\, for\namenable gro
ups\, permutation stability in terms of co-soficity of\ninvariant random s
ubgroups (IRS). We will explain that for a class of\namenable groups actin
g on rooted trees\, including the Grigorchuk\ngroup\, the IRS co-soficity
condition is verified. One key ingredient\nin the proof is the so called “
double commutator” lemma for IRS\,\nwhich is an analogue of the classical
lemma known for normal\nsubgroups. All notions will be defined and explain
ed.
DTSTART:20210203T160000Z
DTEND:20210203T171500Z
LAST-MODIFIED:20210106T000847Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-12
END:VEVENT
BEGIN:VEVENT
UID:73cba845-ee8f-4105-b4c3-8462512b9f76
DTSTAMP:20210119T130816Z
CREATED:20210106T002906Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210203T200000Z
DTEND:20210203T220000Z
LAST-MODIFIED:20210106T002915Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-16
END:VEVENT
BEGIN:VEVENT
UID:59f7057e-ebcb-43b2-8316-a64fc3a20b95
DTSTAMP:20210119T130816Z
CREATED:20210106T004725Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210203T223000Z
DTEND:20210204T000000Z
LAST-MODIFIED:20210106T004734Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-198
END:VEVENT
BEGIN:VEVENT
UID:47401491-5bd9-4c3a-bf96-4fdebde0b031
DTSTAMP:20210119T130816Z
CREATED:20201210T013023Z
DESCRIPTION:
DTSTART:20210204T150000Z
DTEND:20210204T170000Z
LAST-MODIFIED:20210106T041631Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-15
END:VEVENT
BEGIN:VEVENT
UID:46726b6e-d2af-4ff8-b114-53c22f601854
DTSTAMP:20210119T130816Z
CREATED:20210107T004841Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210204T210000Z
DTEND:20210204T230000Z
LAST-MODIFIED:20210107T004849Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-1
END:VEVENT
BEGIN:VEVENT
UID:31763932-696e-4afa-af71-2cfa60475e0d
DTSTAMP:20210119T130816Z
CREATED:20210106T010723Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210204T213000Z
DTEND:20210204T223000Z
LAST-MODIFIED:20210108T165326Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-437
END:VEVENT
BEGIN:VEVENT
UID:c863c965-824e-44cf-b342-771b1385e703
DTSTAMP:20210119T130816Z
CREATED:20210106T021826Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210205T141500Z
DTEND:20210205T154500Z
LAST-MODIFIED:20210106T021836Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-57
END:VEVENT
BEGIN:VEVENT
UID:47dbfa4c-2b06-46a3-925f-740fcabd2482
DTSTAMP:20210119T130816Z
CREATED:20201102T134103Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Robert Kleinberg\n\nAffiliation: Cornel
l University\n\n
DTSTART:20210208T161500Z
DTEND:20210208T171500Z
LAST-MODIFIED:20210104T134932Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-473
END:VEVENT
BEGIN:VEVENT
UID:85c83f4d-7f9e-4232-a08a-2bab732a8b59
DTSTAMP:20210119T130816Z
CREATED:20201209T231610Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Tom Braden\n\nAffiliation:
University of Massachusetts\, Amherst\; Member\, School of Mathematics\n\n
DTSTART:20210208T190000Z
DTEND:20210208T200000Z
LAST-MODIFIED:20210105T202608Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-352
END:VEVENT
BEGIN:VEVENT
UID:fa98b38e-d987-47c6-bd41-d3cc2e8cd658
DTSTAMP:20210119T130816Z
CREATED:20210105T211919Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210208T213000Z
DTEND:20210208T223000Z
LAST-MODIFIED:20210105T211927Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-135
END:VEVENT
BEGIN:VEVENT
UID:cd86fcbc-0be2-4d5b-8b91-9da3e216dd26
DTSTAMP:20210119T130816Z
CREATED:20201105T141703Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Shai Evra\n\nAffiliation: Princeton Uni
versity\n\n
DTSTART:20210209T153000Z
DTEND:20210209T173000Z
LAST-MODIFIED:20210104T135442Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-468
END:VEVENT
BEGIN:VEVENT
UID:042ca050-4eda-4ca2-bb5d-c8a2caf4c194
DTSTAMP:20210119T130816Z
CREATED:20210105T221623Z
DESCRIPTION:Topic: Coherent ∞-topoi\n\n
DTSTART:20210209T183000Z
DTEND:20210209T203000Z
LAST-MODIFIED:20210105T225108Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-14
END:VEVENT
BEGIN:VEVENT
UID:8f4c59de-bd05-4550-ae89-d509d58c283c
DTSTAMP:20210119T130816Z
CREATED:20210106T221949Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210209T200000Z
DTEND:20210209T220000Z
LAST-MODIFIED:20210106T233329Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-12
END:VEVENT
BEGIN:VEVENT
UID:c86d33b6-70d9-4cc8-ba0e-822bbf93d955
DTSTAMP:20210119T130816Z
CREATED:20210105T233045Z
DESCRIPTION:Topic: Non-amenable groups admitting no sofic approximation by
expander graphs\n\nSpeakers: Gabor Kun\n\nAffiliation: Alfréd Rényi Instit
ute of Mathematics\n\nWe show that the direct product of an infinite\, fin
itely generated\nKazhdan Property (T) group and a finitely presented\, not
residually\nfinite amenable group admits no sofic approximation by expand
er\ngraphs. Joint work with Andreas Thom.
DTSTART:20210210T160000Z
DTEND:20210210T171500Z
LAST-MODIFIED:20210106T000909Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-13
END:VEVENT
BEGIN:VEVENT
UID:4362e5bb-227a-45d5-a321-6197aeeafe26
DTSTAMP:20210119T130816Z
CREATED:20210106T002924Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210210T200000Z
DTEND:20210210T220000Z
LAST-MODIFIED:20210106T002931Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-17
END:VEVENT
BEGIN:VEVENT
UID:d47f6df1-77ea-4672-a9ee-84f7536e06aa
DTSTAMP:20210119T130816Z
CREATED:20210106T004743Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210210T223000Z
DTEND:20210211T000000Z
LAST-MODIFIED:20210106T004752Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-199
END:VEVENT
BEGIN:VEVENT
UID:b7556490-0b57-42d2-86a3-d99cfeff24d6
DTSTAMP:20210119T130816Z
CREATED:20201210T013038Z
DESCRIPTION:
DTSTART:20210211T150000Z
DTEND:20210211T170000Z
LAST-MODIFIED:20210106T041727Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-16
END:VEVENT
BEGIN:VEVENT
UID:59c1dc8d-0d0d-4f30-87c4-ee43559e30a3
DTSTAMP:20210119T130816Z
CREATED:20210107T004859Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210211T210000Z
DTEND:20210211T230000Z
LAST-MODIFIED:20210107T004909Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-2
END:VEVENT
BEGIN:VEVENT
UID:6c2da7f5-2217-4431-b9ef-d73ddba4bce9
DTSTAMP:20210119T130816Z
CREATED:20210106T011013Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210211T213000Z
DTEND:20210211T223000Z
LAST-MODIFIED:20210108T165406Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-438
END:VEVENT
BEGIN:VEVENT
UID:4b959aaf-2853-4159-a82f-c7d4259913f9
DTSTAMP:20210119T130816Z
CREATED:20210106T021843Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210212T141500Z
DTEND:20210212T154500Z
LAST-MODIFIED:20210106T021851Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-58
END:VEVENT
BEGIN:VEVENT
UID:e3bfde74-3b87-456e-851d-04dae0185414
DTSTAMP:20210119T130816Z
CREATED:20201111T155153Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Arkadev Chattopadhyay\n\nAffiliation: T
ata Institute of Fundamental Research\n\n
DTSTART:20210215T161500Z
DTEND:20210215T171500Z
LAST-MODIFIED:20210104T135526Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-474
END:VEVENT
BEGIN:VEVENT
UID:0179fdc9-f14e-4448-9a93-f0985d198b5f
DTSTAMP:20210119T130816Z
CREATED:20201209T231623Z
DESCRIPTION:Topic: No seminar: Presidents' Day\n\n
DTSTART:20210215T190000Z
DTEND:20210215T200000Z
LAST-MODIFIED:20210105T200958Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-353
END:VEVENT
BEGIN:VEVENT
UID:034d90f5-ad16-4b60-af92-4cbe5c5f4f6f
DTSTAMP:20210119T130816Z
CREATED:20210105T211935Z
DESCRIPTION:Topic: No seminar: Presidents' Day\n\n
DTSTART:20210215T213000Z
DTEND:20210215T223000Z
LAST-MODIFIED:20210106T192911Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-136
END:VEVENT
BEGIN:VEVENT
UID:c2858276-3943-4c3f-811b-175531945c09
DTSTAMP:20210119T130816Z
CREATED:20201105T141752Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Shai Evra\n\nAffiliation: Princeton Uni
versity\n\n
DTSTART:20210216T153000Z
DTEND:20210216T173000Z
LAST-MODIFIED:20210104T135740Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-469
END:VEVENT
BEGIN:VEVENT
UID:bd8b7046-2e76-4bf3-ba54-fe71f0a1c85f
DTSTAMP:20210119T130816Z
CREATED:20210105T221643Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210216T183000Z
DTEND:20210216T203000Z
LAST-MODIFIED:20210105T221653Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-15
END:VEVENT
BEGIN:VEVENT
UID:e832c0bc-39e2-49df-af2a-89cc4a4a32f5
DTSTAMP:20210119T130816Z
CREATED:20210106T222007Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210216T200000Z
DTEND:20210216T220000Z
LAST-MODIFIED:20210106T233350Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-13
END:VEVENT
BEGIN:VEVENT
UID:9d0e463e-d38d-4853-b8b6-65442b19341a
DTSTAMP:20210119T130816Z
CREATED:20210105T233102Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210217T160000Z
DTEND:20210217T171500Z
LAST-MODIFIED:20210105T233112Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-14
END:VEVENT
BEGIN:VEVENT
UID:b1ed3d23-e559-4b65-bd5a-4fda393cc40d
DTSTAMP:20210119T130816Z
CREATED:20210106T002940Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210217T200000Z
DTEND:20210217T220000Z
LAST-MODIFIED:20210106T002948Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-18
END:VEVENT
BEGIN:VEVENT
UID:62af1582-0c20-486a-a38c-f3f9ede014f5
DTSTAMP:20210119T130816Z
CREATED:20210106T004801Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210217T223000Z
DTEND:20210218T000000Z
LAST-MODIFIED:20210106T004811Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-200
END:VEVENT
BEGIN:VEVENT
UID:7998969d-58e4-4300-8ab8-4faed4541644
DTSTAMP:20210119T130816Z
CREATED:20201210T013050Z
DESCRIPTION:
DTSTART:20210218T150000Z
DTEND:20210218T170000Z
LAST-MODIFIED:20210106T041826Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-17
END:VEVENT
BEGIN:VEVENT
UID:65d65b2b-8ac2-403d-99ed-e814b2d6eb9f
DTSTAMP:20210119T130816Z
CREATED:20210107T004916Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210218T210000Z
DTEND:20210218T230000Z
LAST-MODIFIED:20210107T004923Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-3
END:VEVENT
BEGIN:VEVENT
UID:c67b2e95-635c-4458-9a9d-3dec583ecc4e
DTSTAMP:20210119T130816Z
CREATED:20210106T011031Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210218T213000Z
DTEND:20210218T223000Z
LAST-MODIFIED:20210108T165447Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-439
END:VEVENT
BEGIN:VEVENT
UID:5051d45c-323c-4a44-aa0d-6e5f5d43db01
DTSTAMP:20210119T130816Z
CREATED:20210106T021859Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210219T141500Z
DTEND:20210219T154500Z
LAST-MODIFIED:20210106T021907Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-59
END:VEVENT
BEGIN:VEVENT
UID:739a7cbe-9364-43b6-84b7-9202b3cdfc89
DTSTAMP:20210119T130816Z
CREATED:20201105T141054Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Zongchen Chen\n\nAffiliation: Georgia I
nstitute of Technology\n\n
DTSTART:20210222T161500Z
DTEND:20210222T171500Z
LAST-MODIFIED:20210104T140020Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-475
END:VEVENT
BEGIN:VEVENT
UID:f9be7d5e-333e-40fb-b919-3ffb10c19ff3
DTSTAMP:20210119T130816Z
CREATED:20201209T231637Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: James Stone\n\nAffiliation:
Professor\, School of Natural Sciences\n\n
DTSTART:20210222T190000Z
DTEND:20210222T200000Z
LAST-MODIFIED:20210105T202629Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-354
END:VEVENT
BEGIN:VEVENT
UID:168d401d-d153-43a8-9476-bef7d9cc14a8
DTSTAMP:20210119T130816Z
CREATED:20210105T211953Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210222T213000Z
DTEND:20210222T223000Z
LAST-MODIFIED:20210105T212002Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-137
END:VEVENT
BEGIN:VEVENT
UID:953edad7-d294-4862-b8d4-c3dc35a22109
DTSTAMP:20210119T130816Z
CREATED:20201105T142008Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210223T153000Z
DTEND:20210223T173000Z
LAST-MODIFIED:20201207T044112Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-470
END:VEVENT
BEGIN:VEVENT
UID:d65d7de8-eb44-473b-aa0e-ad706896f7ba
DTSTAMP:20210119T130816Z
CREATED:20210105T221702Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210223T183000Z
DTEND:20210223T203000Z
LAST-MODIFIED:20210105T221711Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-16
END:VEVENT
BEGIN:VEVENT
UID:88209707-b3c0-4578-a4e7-7638dd31b1ee
DTSTAMP:20210119T130816Z
CREATED:20210106T222023Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210223T200000Z
DTEND:20210223T220000Z
LAST-MODIFIED:20210106T233409Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-14
END:VEVENT
BEGIN:VEVENT
UID:2b7d7490-eaf5-4fb1-a592-99c69defb0f8
DTSTAMP:20210119T130816Z
CREATED:20210105T233119Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210224T160000Z
DTEND:20210224T171500Z
LAST-MODIFIED:20210105T233128Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-15
END:VEVENT
BEGIN:VEVENT
UID:b9bdb180-eb55-4ea4-8384-02e4e80d6e1a
DTSTAMP:20210119T130816Z
CREATED:20210106T002955Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210224T200000Z
DTEND:20210224T220000Z
LAST-MODIFIED:20210106T003003Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-19
END:VEVENT
BEGIN:VEVENT
UID:ec7bcd4e-c412-4e7f-ae6a-adcc5f1ef2f0
DTSTAMP:20210119T130816Z
CREATED:20210106T004818Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210224T223000Z
DTEND:20210225T000000Z
LAST-MODIFIED:20210106T004826Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-201
END:VEVENT
BEGIN:VEVENT
UID:5eb82683-8f46-41ba-af3c-33d63a528bca
DTSTAMP:20210119T130816Z
CREATED:20201210T013104Z
DESCRIPTION:
DTSTART:20210225T150000Z
DTEND:20210225T170000Z
LAST-MODIFIED:20210106T041927Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-18
END:VEVENT
BEGIN:VEVENT
UID:30d3b3b4-5210-42b5-9413-a67be0c97c17
DTSTAMP:20210119T130816Z
CREATED:20210107T004931Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210225T210000Z
DTEND:20210225T230000Z
LAST-MODIFIED:20210107T004938Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-4
END:VEVENT
BEGIN:VEVENT
UID:2bd8c5ab-91d9-4aaa-b9d7-2e7ab52483b1
DTSTAMP:20210119T130816Z
CREATED:20210106T011048Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210225T213000Z
DTEND:20210225T223000Z
LAST-MODIFIED:20210108T165526Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-440
END:VEVENT
BEGIN:VEVENT
UID:9e747198-fd5c-41e7-b5e5-6cd0681d0114
DTSTAMP:20210119T130816Z
CREATED:20210106T021915Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210226T141500Z
DTEND:20210226T154500Z
LAST-MODIFIED:20210106T021922Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-60
END:VEVENT
BEGIN:VEVENT
UID:e5fa6ea9-8c77-4f05-92e2-94ea64616511
DTSTAMP:20210119T130816Z
CREATED:20201102T134602Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Benny Sudakov\n\nAffiliation: ETH Züri
ch\n\n
DTSTART:20210301T161500Z
DTEND:20210301T171500Z
LAST-MODIFIED:20210104T140209Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-476
END:VEVENT
BEGIN:VEVENT
UID:b8132932-19fe-4512-bfec-3e8d504a4a15
DTSTAMP:20210119T130816Z
CREATED:20201209T231651Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Avi Wigderson\n\nAffiliatio
n: Herbert H. Maass Professor\, School of Mathematics\n\n
DTSTART:20210301T190000Z
DTEND:20210301T200000Z
LAST-MODIFIED:20210105T202650Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-355
END:VEVENT
BEGIN:VEVENT
UID:cabc5bbc-fc25-40cc-9e63-2566778ef9df
DTSTAMP:20210119T130816Z
CREATED:20210105T212011Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210301T213000Z
DTEND:20210301T223000Z
LAST-MODIFIED:20210105T212019Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-138
END:VEVENT
BEGIN:VEVENT
UID:b5fde5d9-b5ac-428e-82ff-8c8f77b7fba8
DTSTAMP:20210119T130816Z
CREATED:20201105T142037Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210302T153000Z
DTEND:20210302T173000Z
LAST-MODIFIED:20201207T044128Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-471
END:VEVENT
BEGIN:VEVENT
UID:ab8e96a1-fa56-4518-8097-bf9a18b16eca
DTSTAMP:20210119T130816Z
CREATED:20210105T221719Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210302T183000Z
DTEND:20210302T203000Z
LAST-MODIFIED:20210105T221728Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-17
END:VEVENT
BEGIN:VEVENT
UID:0cc33e11-291f-455d-805e-6aba07094f58
DTSTAMP:20210119T130816Z
CREATED:20210106T222039Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210302T200000Z
DTEND:20210302T220000Z
LAST-MODIFIED:20210106T233428Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-15
END:VEVENT
BEGIN:VEVENT
UID:d5a3c64d-9ff3-4131-a81d-8649524da3f0
DTSTAMP:20210119T130816Z
CREATED:20210105T233137Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210303T160000Z
DTEND:20210303T171500Z
LAST-MODIFIED:20210105T233146Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-16
END:VEVENT
BEGIN:VEVENT
UID:c499fd54-7e08-45ad-85a9-040008a0b557
DTSTAMP:20210119T130816Z
CREATED:20210106T003012Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210303T200000Z
DTEND:20210303T220000Z
LAST-MODIFIED:20210106T003020Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-20
END:VEVENT
BEGIN:VEVENT
UID:eecd2c96-e6af-499c-893a-c6891218c951
DTSTAMP:20210119T130816Z
CREATED:20210106T004835Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210303T223000Z
DTEND:20210304T000000Z
LAST-MODIFIED:20210106T004843Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-202
END:VEVENT
BEGIN:VEVENT
UID:780450f6-024a-4714-9401-3319190c6185
DTSTAMP:20210119T130816Z
CREATED:20201210T013117Z
DESCRIPTION:
DTSTART:20210304T150000Z
DTEND:20210304T170000Z
LAST-MODIFIED:20210106T042026Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-19
END:VEVENT
BEGIN:VEVENT
UID:b815d754-0e6a-4627-8c10-7d049405bd0b
DTSTAMP:20210119T130816Z
CREATED:20210107T004946Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210304T210000Z
DTEND:20210304T230000Z
LAST-MODIFIED:20210107T004954Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-5
END:VEVENT
BEGIN:VEVENT
UID:dc702e0b-e805-4a3c-85c2-d36f612a4d19
DTSTAMP:20210119T130816Z
CREATED:20210106T011108Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210304T213000Z
DTEND:20210304T223000Z
LAST-MODIFIED:20210108T165606Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-441
END:VEVENT
BEGIN:VEVENT
UID:071ce1d8-b9d3-4fe6-b7a0-92a02c4af8d1
DTSTAMP:20210119T130816Z
CREATED:20210106T021931Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210305T141500Z
DTEND:20210305T154500Z
LAST-MODIFIED:20210106T021940Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-61
END:VEVENT
BEGIN:VEVENT
UID:84014cd8-5e5b-43dc-85aa-52524db1a4ae
DTSTAMP:20210119T130816Z
CREATED:20201102T201706Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Sylvia Serfaty\n\nAffiliation: New York
University\n\n
DTSTART:20210305T180000Z
DTEND:20210305T220000Z
LAST-MODIFIED:20201208T215022Z
LOCATION:
SUMMARY:Ruth and Irving Adler Expository Lecture in Mathematics
URL:https://www.ias.edu/math/events/ruth-and-irving-adler-expository-lectur
e-mathematics
END:VEVENT
BEGIN:VEVENT
UID:3b6d09e6-314c-47b5-9a3a-efc787bfcc06
DTSTAMP:20210119T130816Z
CREATED:20201102T134915Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Venkatesan Guruswami\n\nAffiliation: Ca
rnegie Mellon University\n\n
DTSTART:20210308T161500Z
DTEND:20210308T171500Z
LAST-MODIFIED:20210104T140253Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-477
END:VEVENT
BEGIN:VEVENT
UID:56c73c82-c58a-45d6-9148-400186ee2b54
DTSTAMP:20210119T130816Z
CREATED:20201209T231703Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210308T190000Z
DTEND:20210308T200000Z
LAST-MODIFIED:20210105T124831Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-356
END:VEVENT
BEGIN:VEVENT
UID:4b8c1ea2-ca73-49ff-b1a9-aa5c11993a74
DTSTAMP:20210119T130816Z
CREATED:20210105T212027Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210308T213000Z
DTEND:20210308T223000Z
LAST-MODIFIED:20210105T212036Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-139
END:VEVENT
BEGIN:VEVENT
UID:4fd626ae-33a5-4b4e-94fa-ab4165fae085
DTSTAMP:20210119T130816Z
CREATED:20201105T142117Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210309T153000Z
DTEND:20210309T173000Z
LAST-MODIFIED:20201207T044142Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-472
END:VEVENT
BEGIN:VEVENT
UID:dd96eb14-38ac-4bd5-a62e-62a1201ddbd3
DTSTAMP:20210119T130816Z
CREATED:20210105T221737Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210309T183000Z
DTEND:20210309T203000Z
LAST-MODIFIED:20210105T221746Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-18
END:VEVENT
BEGIN:VEVENT
UID:030d2c2c-d91f-49e9-bd75-339e82ff7e75
DTSTAMP:20210119T130816Z
CREATED:20210106T222053Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210309T200000Z
DTEND:20210309T220000Z
LAST-MODIFIED:20210106T233448Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-16
END:VEVENT
BEGIN:VEVENT
UID:370b995c-eb9d-445f-afc0-c0f906b4a720
DTSTAMP:20210119T130816Z
CREATED:20210105T233155Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210310T160000Z
DTEND:20210310T171500Z
LAST-MODIFIED:20210105T233204Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-17
END:VEVENT
BEGIN:VEVENT
UID:7d3f0ab3-fc8a-4286-8924-08b4c4f4e950
DTSTAMP:20210119T130816Z
CREATED:20210106T003029Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210310T200000Z
DTEND:20210310T220000Z
LAST-MODIFIED:20210106T003038Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-21
END:VEVENT
BEGIN:VEVENT
UID:5256def8-941a-4a48-ae43-18c4c9ce0c6e
DTSTAMP:20210119T130816Z
CREATED:20210106T004852Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210310T223000Z
DTEND:20210311T000000Z
LAST-MODIFIED:20210106T004900Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-203
END:VEVENT
BEGIN:VEVENT
UID:457e0c01-9a04-45ac-904d-94d3e281c491
DTSTAMP:20210119T130816Z
CREATED:20201210T013130Z
DESCRIPTION:
DTSTART:20210311T150000Z
DTEND:20210311T170000Z
LAST-MODIFIED:20210106T042125Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-20
END:VEVENT
BEGIN:VEVENT
UID:8b5b19dc-ab53-469e-8cd3-5f1659c665e8
DTSTAMP:20210119T130816Z
CREATED:20210107T005002Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210311T210000Z
DTEND:20210311T230000Z
LAST-MODIFIED:20210107T005011Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-6
END:VEVENT
BEGIN:VEVENT
UID:1a65f4d0-4f4d-4f10-9fe3-8c8ff54586e5
DTSTAMP:20210119T130816Z
CREATED:20210106T011125Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210311T213000Z
DTEND:20210311T223000Z
LAST-MODIFIED:20210108T165647Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-442
END:VEVENT
BEGIN:VEVENT
UID:68e546c0-e209-453e-9590-d08953920460
DTSTAMP:20210119T130816Z
CREATED:20210106T021948Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210312T141500Z
DTEND:20210312T154500Z
LAST-MODIFIED:20210106T021955Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-62
END:VEVENT
BEGIN:VEVENT
UID:89617339-607e-4cc0-b6f9-fa010e120828
DTSTAMP:20210119T130816Z
CREATED:20201211T181634Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210315T151500Z
DTEND:20210315T161500Z
LAST-MODIFIED:20201211T181751Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-478
END:VEVENT
BEGIN:VEVENT
UID:52fec9cd-6b4b-4193-beab-30f87371ce46
DTSTAMP:20210119T130816Z
CREATED:20201209T231716Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210315T180000Z
DTEND:20210315T190000Z
LAST-MODIFIED:20210105T124922Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-357
END:VEVENT
BEGIN:VEVENT
UID:03799721-c80b-4fbe-b077-0f1e49f57e17
DTSTAMP:20210119T130816Z
CREATED:20210105T212043Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210315T203000Z
DTEND:20210315T213000Z
LAST-MODIFIED:20210105T212052Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-140
END:VEVENT
BEGIN:VEVENT
UID:893ec21d-2f1f-45f4-a204-2c0457f0d9aa
DTSTAMP:20210119T130816Z
CREATED:20201211T183906Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210316T143000Z
DTEND:20210316T163000Z
LAST-MODIFIED:20201211T183923Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-473
END:VEVENT
BEGIN:VEVENT
UID:d9f49e4b-edea-460b-b5ce-f7bc46d17e38
DTSTAMP:20210119T130816Z
CREATED:20210105T221755Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210316T173000Z
DTEND:20210316T193000Z
LAST-MODIFIED:20210105T221803Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-19
END:VEVENT
BEGIN:VEVENT
UID:01d3ec40-ef96-4053-9a27-009936656d6d
DTSTAMP:20210119T130816Z
CREATED:20210106T222110Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210316T190000Z
DTEND:20210316T210000Z
LAST-MODIFIED:20210106T233507Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-17
END:VEVENT
BEGIN:VEVENT
UID:07fa7f7b-8445-4155-8538-6a989f6626e3
DTSTAMP:20210119T130816Z
CREATED:20210105T233215Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210317T150000Z
DTEND:20210317T161500Z
LAST-MODIFIED:20210105T233222Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-18
END:VEVENT
BEGIN:VEVENT
UID:1935dbd7-0c2c-408d-b085-c334d4caa27d
DTSTAMP:20210119T130816Z
CREATED:20210106T003047Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210317T190000Z
DTEND:20210317T210000Z
LAST-MODIFIED:20210106T003056Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-22
END:VEVENT
BEGIN:VEVENT
UID:094f3474-c6d7-4f76-9da4-bb93cd516cc3
DTSTAMP:20210119T130816Z
CREATED:20210106T004909Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210317T213000Z
DTEND:20210317T230000Z
LAST-MODIFIED:20210106T004917Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-204
END:VEVENT
BEGIN:VEVENT
UID:98be5a6b-3ab9-4194-953f-12349ce74b29
DTSTAMP:20210119T130816Z
CREATED:20201210T013142Z
DESCRIPTION:
DTSTART:20210318T140000Z
DTEND:20210318T160000Z
LAST-MODIFIED:20210106T042223Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-21
END:VEVENT
BEGIN:VEVENT
UID:ef0b57f4-a02e-4082-a9e5-1dea6c4c17b5
DTSTAMP:20210119T130816Z
CREATED:20210107T005019Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210318T200000Z
DTEND:20210318T220000Z
LAST-MODIFIED:20210107T005026Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-7
END:VEVENT
BEGIN:VEVENT
UID:cad751b1-090b-4934-88b2-6e25d6b6bfa0
DTSTAMP:20210119T130816Z
CREATED:20210106T011141Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210318T203000Z
DTEND:20210318T213000Z
LAST-MODIFIED:20210108T165727Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-443
END:VEVENT
BEGIN:VEVENT
UID:07aeffd7-1578-4445-bc34-862838a87cfd
DTSTAMP:20210119T130816Z
CREATED:20210106T022003Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210319T131500Z
DTEND:20210319T144500Z
LAST-MODIFIED:20210106T022012Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-63
END:VEVENT
BEGIN:VEVENT
UID:a96b985b-90d2-4c6e-8fb4-e9404292598e
DTSTAMP:20210119T130816Z
CREATED:20201211T183006Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210322T151500Z
DTEND:20210322T161500Z
LAST-MODIFIED:20201211T183028Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-479
END:VEVENT
BEGIN:VEVENT
UID:660cb500-b84a-455c-9706-9105a4766c6a
DTSTAMP:20210119T130816Z
CREATED:20201209T231731Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Nathalie Wahl\n\nAffiliatio
n: University of Copenhagen\; Member\, School of Mathematics\n\n
DTSTART:20210322T180000Z
DTEND:20210322T190000Z
LAST-MODIFIED:20210105T202709Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-358
END:VEVENT
BEGIN:VEVENT
UID:305300e5-30ba-4206-9fc5-ffe19cff0d9e
DTSTAMP:20210119T130816Z
CREATED:20210105T212101Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210322T203000Z
DTEND:20210322T213000Z
LAST-MODIFIED:20210105T212109Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-141
END:VEVENT
BEGIN:VEVENT
UID:7a2dbced-1be2-4934-85dc-67d412b36b45
DTSTAMP:20210119T130816Z
CREATED:20201211T183932Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210323T143000Z
DTEND:20210323T163000Z
LAST-MODIFIED:20201211T183950Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-474
END:VEVENT
BEGIN:VEVENT
UID:bf0be720-7fae-4530-b419-06dfa07c0484
DTSTAMP:20210119T130816Z
CREATED:20210105T221812Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210323T173000Z
DTEND:20210323T193000Z
LAST-MODIFIED:20210105T221822Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-20
END:VEVENT
BEGIN:VEVENT
UID:e3bf0e11-c052-42d3-8564-8337b1f88ce5
DTSTAMP:20210119T130816Z
CREATED:20210106T222126Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210323T190000Z
DTEND:20210323T210000Z
LAST-MODIFIED:20210106T233527Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-18
END:VEVENT
BEGIN:VEVENT
UID:0cc80441-a42e-45c2-b719-6ef09117b15f
DTSTAMP:20210119T130816Z
CREATED:20210105T233231Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210324T150000Z
DTEND:20210324T161500Z
LAST-MODIFIED:20210105T233238Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-19
END:VEVENT
BEGIN:VEVENT
UID:5ad7cb8f-f8fc-44c4-b1db-9edb3af1afc2
DTSTAMP:20210119T130816Z
CREATED:20210106T003104Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210324T190000Z
DTEND:20210324T210000Z
LAST-MODIFIED:20210106T003112Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-23
END:VEVENT
BEGIN:VEVENT
UID:57f9a2db-0780-41e7-9583-e2935f7fd9b5
DTSTAMP:20210119T130816Z
CREATED:20210106T004926Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210324T213000Z
DTEND:20210324T230000Z
LAST-MODIFIED:20210106T004935Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-205
END:VEVENT
BEGIN:VEVENT
UID:30207d34-2dc3-48e7-a01e-ee6eb0f700fc
DTSTAMP:20210119T130816Z
CREATED:20201210T013155Z
DESCRIPTION:
DTSTART:20210325T140000Z
DTEND:20210325T160000Z
LAST-MODIFIED:20210106T042322Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-22
END:VEVENT
BEGIN:VEVENT
UID:70a7e982-8b47-49fa-beed-f98fd1272a31
DTSTAMP:20210119T130816Z
CREATED:20210107T005035Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210325T200000Z
DTEND:20210325T220000Z
LAST-MODIFIED:20210107T005044Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-8
END:VEVENT
BEGIN:VEVENT
UID:d65ac8f5-3c32-4999-883b-72b839555c94
DTSTAMP:20210119T130816Z
CREATED:20210106T011157Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210325T203000Z
DTEND:20210325T213000Z
LAST-MODIFIED:20210108T165806Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-444
END:VEVENT
BEGIN:VEVENT
UID:78318072-f161-4069-8bc6-7622d071cdf9
DTSTAMP:20210119T130816Z
CREATED:20210106T022020Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210326T131500Z
DTEND:20210326T144500Z
LAST-MODIFIED:20210106T022029Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-64
END:VEVENT
BEGIN:VEVENT
UID:584239f7-60c8-41e7-a6b5-04d50a4622eb
DTSTAMP:20210119T130816Z
CREATED:20201211T183039Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210329T151500Z
DTEND:20210329T161500Z
LAST-MODIFIED:20201211T183100Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-480
END:VEVENT
BEGIN:VEVENT
UID:4edc9d4c-b2b4-4ad7-a6c6-0aaba2e31e0b
DTSTAMP:20210119T130816Z
CREATED:20201209T231745Z
DESCRIPTION:Topic: No seminar: workshop\n\n
DTSTART:20210329T180000Z
DTEND:20210329T190000Z
LAST-MODIFIED:20210105T200406Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-359
END:VEVENT
BEGIN:VEVENT
UID:b8722d23-4ec7-4d4e-b0d2-ec632e026f20
DTSTAMP:20210119T130816Z
CREATED:20210105T212116Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210329T203000Z
DTEND:20210329T213000Z
LAST-MODIFIED:20210105T212124Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-142
END:VEVENT
BEGIN:VEVENT
UID:00a2fb90-8486-4969-8c4f-6de1cfef1c7c
DTSTAMP:20210119T130816Z
CREATED:20201211T184005Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210330T143000Z
DTEND:20210330T163000Z
LAST-MODIFIED:20201211T184022Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-475
END:VEVENT
BEGIN:VEVENT
UID:96a2fea4-21ea-4612-99d4-e2db8392b72f
DTSTAMP:20210119T130816Z
CREATED:20210105T221829Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210330T173000Z
DTEND:20210330T193000Z
LAST-MODIFIED:20210105T221837Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-21
END:VEVENT
BEGIN:VEVENT
UID:b7c9a17a-d41a-43b1-8155-52bee0f96c0b
DTSTAMP:20210119T130816Z
CREATED:20210106T222141Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210330T190000Z
DTEND:20210330T210000Z
LAST-MODIFIED:20210106T233546Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-19
END:VEVENT
BEGIN:VEVENT
UID:c558bb28-f25f-42f8-b1ac-a2bbde325deb
DTSTAMP:20210119T130816Z
CREATED:20210105T233246Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210331T150000Z
DTEND:20210331T161500Z
LAST-MODIFIED:20210105T233255Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-20
END:VEVENT
BEGIN:VEVENT
UID:beca63dd-fe59-454f-be8f-b835ce609351
DTSTAMP:20210119T130816Z
CREATED:20210106T003120Z
DESCRIPTION:Topic: No seminar: workshop\n\n
DTSTART:20210331T190000Z
DTEND:20210331T210000Z
LAST-MODIFIED:20210106T003827Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-24
END:VEVENT
BEGIN:VEVENT
UID:fc9d5ee5-ebfa-4486-9cf6-e5535aa1c744
DTSTAMP:20210119T130816Z
CREATED:20210106T004944Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210331T213000Z
DTEND:20210331T230000Z
LAST-MODIFIED:20210106T004951Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-206
END:VEVENT
BEGIN:VEVENT
UID:7fad9a94-efbd-4581-b0b9-98228ad30ad3
DTSTAMP:20210119T130816Z
CREATED:20201210T013207Z
DESCRIPTION:
DTSTART:20210401T140000Z
DTEND:20210401T160000Z
LAST-MODIFIED:20210106T042420Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-23
END:VEVENT
BEGIN:VEVENT
UID:59b59ff0-93c3-48bc-80f9-f223038df4d0
DTSTAMP:20210119T130816Z
CREATED:20210107T005052Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210401T200000Z
DTEND:20210401T220000Z
LAST-MODIFIED:20210107T005101Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-9
END:VEVENT
BEGIN:VEVENT
UID:4e6a0402-70b5-4245-b6fb-03309351084c
DTSTAMP:20210119T130816Z
CREATED:20210106T011215Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210401T203000Z
DTEND:20210401T213000Z
LAST-MODIFIED:20210108T165848Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-445
END:VEVENT
BEGIN:VEVENT
UID:7a22e764-81d9-46bb-9cc5-ff3b187f0a04
DTSTAMP:20210119T130816Z
CREATED:20210106T022037Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210402T131500Z
DTEND:20210402T144500Z
LAST-MODIFIED:20210106T022046Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-65
END:VEVENT
BEGIN:VEVENT
UID:27d9dad7-470d-4cdc-9380-33c45970b81e
DTSTAMP:20210119T130816Z
CREATED:20201211T183110Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210405T151500Z
DTEND:20210405T161500Z
LAST-MODIFIED:20201211T183129Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-481
END:VEVENT
BEGIN:VEVENT
UID:b0e84a87-3c5f-4862-a5a5-6f8a7d855bbb
DTSTAMP:20210119T130816Z
CREATED:20201209T231758Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210405T180000Z
DTEND:20210405T190000Z
LAST-MODIFIED:20210105T125158Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Members’ Seminar
URL:https://www.ias.edu/math/events/members-seminar-360
END:VEVENT
BEGIN:VEVENT
UID:acb2a8b9-897a-4787-b6cf-39bd4fdcbf7c
DTSTAMP:20210119T130816Z
CREATED:20210105T212132Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210405T203000Z
DTEND:20210405T213000Z
LAST-MODIFIED:20210105T212142Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/math/events/analysis-seminar-143
END:VEVENT
BEGIN:VEVENT
UID:1496974e-d2dc-4245-83f2-3417ae5633c5
DTSTAMP:20210119T130816Z
CREATED:20201211T184029Z
DESCRIPTION:Topic: TBA\n\n
DTSTART:20210406T143000Z
DTEND:20210406T163000Z
LAST-MODIFIED:20201215T181257Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-ii-476
END:VEVENT
BEGIN:VEVENT
UID:bee5009a-b165-4f01-b474-94b0a39f3727
DTSTAMP:20210119T130816Z
CREATED:20210105T221846Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210406T173000Z
DTEND:20210406T193000Z
LAST-MODIFIED:20210105T221856Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/math/events/working-group-stratified-homotopy-theor
y-22
END:VEVENT
BEGIN:VEVENT
UID:fb9fc938-828d-4457-ae38-f7d4df973d46
DTSTAMP:20210119T130816Z
CREATED:20210106T222157Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210406T190000Z
DTEND:20210406T210000Z
LAST-MODIFIED:20210106T233607Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/math/events/sl2-seminar-20
END:VEVENT
BEGIN:VEVENT
UID:bee8e250-6898-4c4f-ad56-940e92adc90e
DTSTAMP:20210119T130816Z
CREATED:20210105T233304Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210407T150000Z
DTEND:20210407T161500Z
LAST-MODIFIED:20210105T233311Z
LOCATION:Remote Access
SUMMARY:Stability and Testability
URL:https://www.ias.edu/math/events/stability-and-testability-21
END:VEVENT
BEGIN:VEVENT
UID:81809437-5290-48fc-8e6f-912d8e736a6e
DTSTAMP:20210119T130816Z
CREATED:20210106T003136Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210407T190000Z
DTEND:20210407T210000Z
LAST-MODIFIED:20210106T003145Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Geometric and Modular Representation Theory Seminar
URL:https://www.ias.edu/math/events/geometric-and-modular-representation-th
eory-seminar-25
END:VEVENT
BEGIN:VEVENT
UID:ac6eb65d-7b7b-4c5e-9029-c3a94d2a2ba2
DTSTAMP:20210119T130816Z
CREATED:20210106T005000Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210407T213000Z
DTEND:20210407T230000Z
LAST-MODIFIED:20210106T005008Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/math/events/mathematical-conversations-207
END:VEVENT
BEGIN:VEVENT
UID:9907fe31-41bc-4c59-a172-90ff1a8a58f2
DTSTAMP:20210119T130816Z
CREATED:20201210T013221Z
DESCRIPTION:
DTSTART:20210408T140000Z
DTEND:20210408T160000Z
LAST-MODIFIED:20210106T042517Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/math/events/moonshine-seminar-24
END:VEVENT
BEGIN:VEVENT
UID:9cb2433c-b659-4c65-af33-ac405d0a3e58
DTSTAMP:20210119T130816Z
CREATED:20210107T005109Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210408T200000Z
DTEND:20210408T220000Z
LAST-MODIFIED:20210107T005116Z
LOCATION:Remote Access
SUMMARY:Quantum Groups Seminar
URL:https://www.ias.edu/math/events/quantum-groups-seminar-10
END:VEVENT
BEGIN:VEVENT
UID:afcc7aaa-6436-417d-9a65-9219cd6baaaf
DTSTAMP:20210119T130816Z
CREATED:20210106T011232Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210408T203000Z
DTEND:20210408T213000Z
LAST-MODIFIED:20210108T165928Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/math/events/joint-iasprinceton-university-number-th
eory-seminar-446
END:VEVENT
BEGIN:VEVENT
UID:5a505cb9-0e6a-4326-bc2b-d9acb10bd429
DTSTAMP:20210119T130816Z
CREATED:20210106T022053Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART:20210409T131500Z
DTEND:20210409T144500Z
LAST-MODIFIED:20210106T022102Z
LOCATION:Remote Access
SUMMARY:Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoo
minar
URL:https://www.ias.edu/math/events/joint-iasprincetonmontrealparistel-aviv
-symplectic-geometry-zoominar-66
END:VEVENT
BEGIN:VEVENT
UID:6e5a39ba-b949-4908-a4d6-b6bdb0e35a79
DTSTAMP:20210119T130816Z
CREATED:20200110T165817Z
DESCRIPTION:
DTSTART:20210409T220000Z
DTEND:20210409T220000Z
LAST-MODIFIED:20210104T025537Z
LOCATION:
SUMMARY:IAS School of Mathematics Term II Ends
URL:https://www.ias.edu/math/events/ias-school-mathematics-term-ii-ends
END:VEVENT
BEGIN:VEVENT
UID:ae858f0d-901e-4cf1-99d9-484a82228734
DTSTAMP:20210119T130816Z
CREATED:20201211T183141Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Katrina Legitt\n\nAffiliation: Hebrew U
niversity\n\n
DTSTART:20210412T151500Z
DTEND:20210412T161500Z
LAST-MODIFIED:20210104T140403Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/math/events/computer-sciencediscrete-mathematics-se
minar-i-482
END:VEVENT
BEGIN:VEVENT
UID:7e140cb7-535b-4498-aff3-2edff4d75a38
DTSTAMP:20210119T130816Z
CREATED:20201123T163627Z
DESCRIPTION:Topic: TBA\n\nSpeakers: Nike Sun\n\nAffiliation: Massachusetts
Institute of Technology\n\n
DTSTART:20210419T160000Z
DTEND:20210423T210000Z
LAST-MODIFIED:20201208T214658Z
LOCATION:
SUMMARY:Marston Morse Lectures
URL:https://www.ias.edu/math/events/marston-morse-lectures
END:VEVENT
BEGIN:VEVENT
UID:0b02f382-1f11-47a6-aeb2-1927e7433821
DTSTAMP:20210119T130816Z
CREATED:20200110T181253Z
DESCRIPTION:
DTSTART:20210920T130000Z
DTEND:20210920T130000Z
LAST-MODIFIED:20210104T025634Z
LOCATION:
SUMMARY:IAS School of Mathematics Term I Begins
URL:https://www.ias.edu/math/events/ias-school-mathematics-term-i-begins-0
END:VEVENT
BEGIN:VEVENT
UID:90c4e85d-4bce-43c3-8265-fd1dc7914a4c
DTSTAMP:20210119T130816Z
CREATED:20200110T181356Z
DESCRIPTION:
DTSTART:20211217T230000Z
DTEND:20211217T230000Z
LAST-MODIFIED:20210104T025731Z
LOCATION:
SUMMARY:IAS School of Mathematics Term I Ends
URL:https://www.ias.edu/math/events/ias-school-mathematics-term-i-ends-0
END:VEVENT
BEGIN:VEVENT
UID:297e6848-4681-4c6f-a88f-ec4ea0d1baaa
DTSTAMP:20210119T130816Z
CREATED:20200110T181450Z
DESCRIPTION:
DTSTART:20220110T140000Z
DTEND:20220110T140000Z
LAST-MODIFIED:20210104T025827Z
LOCATION:
SUMMARY:IAS School of Mathematics Term II Begins
URL:https://www.ias.edu/math/events/ias-school-mathematics-term-ii-begins-0
END:VEVENT
END:VCALENDAR