BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//18a41c55e5f61d2a42b10cd7e21d5df0.ias.edu//NONSGML kigkonsult.se i
Calcreator 2.29.29//
CALSCALE:GREGORIAN
UID:8b97349f-6292-43f6-94f1-4eb23df6f202
X-WR-TIMEZONE:UTC
X-WR-CALNAME:IAS Mathematics
BEGIN:VEVENT
UID:7acc1616-008e-426b-b155-355a089e6de1
DTSTAMP:20201026T224633Z
CREATED:20200714T134621Z
DESCRIPTION:Topic: Generalized Energy-Based Models\n\nSpeakers: Arthur Gret
ton\n\nAffiliation: University College London\n\nVideo: Remote Access Only
- see link below\n\nI will introduce Generalized Energy Based Models (GEB
M) for generative\nmodelling. These models combine two trained components:
a base\ndistribution (generally an implicit model)\, which can learn the
\nsupport of data with low intrinsic dimension in a high dimensional\nspac
e\; and an energy function\, to refine the probability mass on the\nlearne
d support. Both the energy function and base jointly constitute\nthe final
model\, unlike GANs\, which retain only the base distribution\n(the 'gene
rator'). In particular\, while the energy function is\nanalogous to the GA
N critic function\, it is not discarded after\ntraining.\nGEBMs are traine
d by alternating between learning the energy and the\nbase. Both training
stages are well-defined: the energy is learned by\nmaximising a generalize
d likelihood\, and the resulting energy-based\nloss provides informative g
radients for learning the base. Samples\nfrom the posterior on the latent
space of the trained model can be\nobtained via MCMC\, thus finding region
s in this space that produce\nbetter quality samples. Empirically\, the GE
BM samples on\nimage-generation tasks are of much better quality than thos
e from the\nlearned generator alone\, indicating that all else being equal
\, the\nGEBM will outperform a GAN of the same complexity. GEBMs also retu
rn\nstate-of-the-art performance on density modelling tasks\, and when\nus
ing base measures with an explicit form.\n\n
DTSTART;TZID=America/New_York:20200728T123000
DTEND;TZID=America/New_York:20200728T134500
LAST-MODIFIED:20200831T125823Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-103
END:VEVENT
BEGIN:VEVENT
UID:438cab80-de3c-464c-ba50-2364f7a8dd42
DTSTAMP:20201026T224633Z
CREATED:20200714T134846Z
DESCRIPTION:Topic: Efficient Robot Skill Learning via Grounded Simulation L
earning\, Imitation Learning from Observation\, and Off-Policy Reinforceme
nt Learning\n\nSpeakers: Peter Stone\n\nAffiliation: The University of Tex
as at Austin\n\nVideo: Remote Access Only - see link below\n\nFor autonomo
us robots to operate in the open\, dynamically changing\nworld\, they will
need to be able to learn a robust set of skills from\nrelatively little e
xperience. This talk begins by introducing Grounded\nSimulation Learning a
s a way to bridge the so-called reality gap\nbetween simulators and the re
al world in order to enable transfer\nlearning from simulation to a real r
obot. It then introduces two new\nalgorithms for imitation learning from o
bservation that enable a robot\nto mimic demonstrated skills from state-on
ly trajectories\, without any\nknowledge of the actions selected by the de
monstrator. Connections to\ntheoretical advances in off-policy reinforceme
nt learning will be\nhighlighted throughout.\n\nGrounded Simulation Learni
ng has led to the fastest known stable walk\non a widely used humanoid rob
ot\, and imitation learning from\nobservation opens the possibility of rob
ots learning from the vast\ntrove of videos available online.\n
DTSTART;TZID=America/New_York:20200730T150000
DTEND;TZID=America/New_York:20200730T163000
LAST-MODIFIED:20200831T125854Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-104
END:VEVENT
BEGIN:VEVENT
UID:bfb3a6ee-3d50-4855-ab43-1ca6c66fe680
DTSTAMP:20201026T224633Z
CREATED:20200724T122744Z
DESCRIPTION:Topic: Nonlinear Independent Component Analysis\n\nSpeakers: Aa
po Hyvärinen\n\nAffiliation: University of Helsinki\n\nVideo: Remote Acces
s Only - see link below\n\nUnsupervised learning\, in particular learning
general nonlinear\nrepresentations\, is one of the deepest problems in mac
hine learning.\nEstimating latent quantities in a generative model provide
s a\nprincipled framework\, and has been successfully used in the linear\n
case\, e.g. with independent component analysis (ICA) and sparse\ncoding.
However\, extending ICA to the nonlinear case has proven to be\nextremely
difficult: A straight-forward extension is unidentifiable\,\ni.e. it is no
t possible to recover those latent components that\nactually generated the
data. Here\, we show that this problem can be\nsolved by using additional
information either in the form of temporal\nstructure or an additional ob
served variable. We start by formulating\ntwo generative models in which t
he data is an arbitrary but invertible\nnonlinear transformation of time s
eries (components) which are\nstatistically independent of each other. Dra
wing from the theory of\nlinear ICA\, we formulate two distinct classes of
temporal structure of\nthe components which enable identification\, i.e.
recovery of the\noriginal independent components. We further generalize th
e framework\nto the case where instead of temporal structure\, an addition
al\n'auxiliary' variable is observed and used by means of conditioning\n(e
.g. audio in addition to video). Our methods are closely related to\n'self
-supervised' methods heuristically proposed in computer vision\,\nand also
provide a theoretical foundation for such methods in terms of\nestimating
a latent-variable model. Likewise\, we show how variants of\ndeep latent-
variable models such as VAE's can be seen as nonlinear\nICA\, and made ide
ntifiable by suitable conditioning.\n
DTSTART;TZID=America/New_York:20200804T123000
DTEND;TZID=America/New_York:20200804T134500
LAST-MODIFIED:20200831T125932Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-105
END:VEVENT
BEGIN:VEVENT
UID:fc82f8fa-1c53-4eca-a799-7021a4a9a6c1
DTSTAMP:20201026T224633Z
CREATED:20200724T123058Z
DESCRIPTION:Topic: A Blueprint of Standardized and Composable Machine Learn
ing\n\nSpeakers: Eric Xing\n\nAffiliation: Carnegie Mellon University\n\nV
ideo: Remote Access Only - see link below\n\nIn handling wide range of exp
eriences ranging from data instances\,\nknowledge\, constraints\, to rewar
ds\, adversaries\, and lifelong\ninterplay in an ever-growing spectrum of
tasks\, contemporary ML/AI\nresearch has resulted in thousands of models\,
learning paradigms\,\noptimization algorithms\, not mentioning countless
approximation\nheuristics\, tuning tricks\, and black-box oracles\, plus c
ombinations of\nall above. While pushing the field forward rapidly\, these
results also\nmake a comprehensive grasp of existing ML techniques more a
nd more\ndifficult\, and make standardized\, reusable\, repeatable\, relia
ble\, and\nexplainable practice and further development of ML/AI products
quite\ncostly\, if possible\, at all. In this talk\, we present a simple a
nd\nsystematic blueprint of ML\, from the aspects of losses\, optimization
\nsolvers\, and model architectures\, that provides a unified mathematical
\nformulation for learning with all experiences and tasks. The blueprint\n
offers a holistic understanding of the diverse ML algorithms\, guidance\no
f operationalizing ML for creating problem solutions in a composable\nand
mechanic manner\, and unified framework for theoretical analysis.\n
DTSTART;TZID=America/New_York:20200806T150000
DTEND;TZID=America/New_York:20200806T163000
LAST-MODIFIED:20200831T130011Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-106
END:VEVENT
BEGIN:VEVENT
UID:cbbfbc8c-affc-4dec-9302-24aef8a631e6
DTSTAMP:20201026T224633Z
CREATED:20200803T202139Z
DESCRIPTION:Topic: Statistical Learning Theory for Modern Machine Learning
\n\nSpeakers: John Shawe-Taylor\n\nAffiliation: University College London
\n\nVideo: Remote Access Only - see link below\n\nProbably Approximately C
orrect (PAC) learning has attempted to analyse\nthe generalisation of lear
ning systems within the statistical learning\nframework. It has been refer
red to as a ‘worst case’ analysis\, but\nthe tools have been extended to a
nalyse cases where benign\ndistributions mean we can still generalise even
if worst case bounds\nsuggest we cannot. The talk will cover the PAC-Baye
s approach to\nanalysing generalisation that is inspired by Bayesian infer
ence\, but\nleads to a different role for the prior and posterior distribu
tions.\nWe will discuss its application to Support Vector Machines and Dee
p\nNeural Networks\, including the use of distribution defined priors.\n
DTSTART;TZID=America/New_York:20200811T123000
DTEND;TZID=America/New_York:20200811T134500
LAST-MODIFIED:20200831T130044Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-107
END:VEVENT
BEGIN:VEVENT
UID:ded5441c-2f88-4dd9-9307-def3b42846aa
DTSTAMP:20201026T224633Z
CREATED:20200803T202729Z
DESCRIPTION:Topic: Latent State Discovery in Reinforcement Learning\n\nSpea
kers: John Langford\n\nAffiliation: Microsoft Research\n\nVideo: Remote Ac
cess Only - see link below\n\nThere are three core orthogonal problems in
reinforcement learning:\n(1) Crediting actions (2) generalizing across ric
h observations (3)\nExploring to discover the information necessary for le
arning. Good\nsolutions to pairs of these problems are fairly well known a
t this\npoint\, but solutions for all three are just now being discovered.
\nI’ll discuss several such results and dive into details on a few of\nthe
m.\n
DTSTART;TZID=America/New_York:20200813T150000
DTEND;TZID=America/New_York:20200813T163000
LAST-MODIFIED:20200831T130118Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-110
END:VEVENT
BEGIN:VEVENT
UID:f834fb74-476b-4355-b59f-43b1a7fb4477
DTSTAMP:20201026T224633Z
CREATED:20200803T202352Z
DESCRIPTION:Topic: From Speech AI to Finance AI and Back\n\nSpeakers: Li De
ng\n\nAffiliation: Citadel\n\nVideo: Remote Access Only - see link below\n
\nA brief review will be provided first on how deep learning has\ndisrupte
d speech recognition and language processing industries since\n2009. Then
connections will be drawn between the techniques (deep\nlearning or otherw
ise) for modeling speech and language and those for\nfinancial markets. Si
milarities and differences of these two fields\nwill be explored. In parti
cular\, three unique technical challenges to\nfinancial investment are add
ressed: extremely low signal-to-noise\nratio\, extremely strong nonstation
arity (with adversarial nature)\, and\nheterogeneous big data. Finally\, h
ow the potential solutions to these\nchallenges can come back to benefit a
nd further advance speech\nrecognition and language processing technology
will be discussed.\n
DTSTART;TZID=America/New_York:20200818T123000
DTEND;TZID=America/New_York:20200818T134500
LAST-MODIFIED:20200831T130152Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-108
END:VEVENT
BEGIN:VEVENT
UID:12485692-cd02-4478-b5e2-aa30983b6051
DTSTAMP:20201026T224633Z
CREATED:20200803T202936Z
DESCRIPTION:Topic: Event Sequence Modeling with the Neural Hawkes Process\n
\nSpeakers: Jason Eisner\n\nAffiliation: Johns Hopkins University\n\nVideo
: Remote Access Only - see link below\n\nSuppose you are monitoring discre
te events in real time. Can you\npredict what events will happen in the fu
ture\, and when? Can you fill\nin past events that you may have missed? A
probability model that\nsupports such reasoning is the neural Hawkes proce
ss (NHP)\, in which\nthe Poisson intensities of K event types at time t de
pend on the\nhistory of past events. This autoregressive architecture can
capture\ncomplex dependencies. It resembles an LSTM language model over K
word\ntypes\, but allows the LSTM state to evolve in continuous time.\n\nT
his talk will present the NHP model along with methods for estimating\npar
ameters (MLE and NCE)\, sampling predictions of the future\n(thinning)\, a
nd imputing missing events (particle smoothing). I'll\nthen show how to sc
ale the NHP or the LSTM language model to large K\,\nbeginning with a temp
oral deductive database for a real-world domain\,\nwhich can track how pos
sible event types and other facts change over\ntime. We take the system st
ate to be a collection of vector-space\nembeddings of these facts\, and de
rive a deep recurrent architecture\nfrom the temporal Datalog program that
specifies the database. We call\nthis method 'neural Datalog through time
.'\n\nThis work was done with Hongyuan Mei and other collaborators includi
ng\nGuanghui Qin\, Minjie Xu\, and Tom Wan.\n
DTSTART;TZID=America/New_York:20200820T150000
DTEND;TZID=America/New_York:20200820T163000
LAST-MODIFIED:20200831T130237Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-111
END:VEVENT
BEGIN:VEVENT
UID:92dd4f65-1571-4408-82c9-05a34220b6bc
DTSTAMP:20201026T224633Z
CREATED:20200803T202512Z
DESCRIPTION:Topic: Learning-Based Sketching Algorithms\n\nSpeakers: Piotr I
ndyk\n\nAffiliation: Massachusetts Institute of Technology\n\nVideo: Remot
e Access Only - see link below\n\nClassical algorithms typically provide '
one size fits all'\nperformance\, and do not leverage properties or patter
ns in their\ninputs. A recent line of work aims to address this issue by d
eveloping\nalgorithms that use machine learning predictions to improve the
ir\nperformance. In this talk I will present two examples of this type\, i
n\nthe context of streaming and sketching algorithms. In particular\, I\nw
ill show how to use machine learning predictions to improve the\nperforman
ce of (a) low-memory streaming algorithms for frequency\nestimation\, and
(b) generating space partitions for nearest neighbor\nsearch.\n\nThe talk
will cover material from papers co-authored with Y Dong\, CY\nHsu\, D Kata
bi\, I Razenshteyn\, T Wagner and A Vakilian.\n
DTSTART;TZID=America/New_York:20200825T123000
DTEND;TZID=America/New_York:20200825T134500
LAST-MODIFIED:20200831T130318Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-109
END:VEVENT
BEGIN:VEVENT
UID:3f26da7e-63bb-4a3e-8f6a-d61669d7e203
DTSTAMP:20201026T224633Z
CREATED:20200803T203049Z
DESCRIPTION:Topic: Multi-Output Prediction: Theory and Practice\n\nSpeakers
: Inderjit Dhillon\n\nAffiliation: University of Texas\, Austin\n\nVideo:
Remote Access Only - see link below\n\nMany challenging problems in modern
applications amount to finding\nrelevant results from an enormous output
space of potential\ncandidates\, for example\, finding the best matching p
roduct from a\nlarge catalog or suggesting related search phrases on a sea
rch engine.\nThe size of the output space for these problems can be in the
millions\nto billions. Moreover\, observational or training data is often
limited\nfor many of the so-called “long-tail” of items in the output\nsp
ace. Given the inherent paucity of training data for most of the\nitems in
the output space\, developing machine learned models that\nperform well f
or spaces of this size is challenging. Fortunately\,\nitems in the output
space are often correlated thereby presenting an\nopportunity to alleviate
the data sparsity issue. In this talk\, I will\nfirst discuss the challen
ges in modern multi-output prediction\,\nincluding missing values\, featur
es associated with outputs\, absence of\nexplicit negative examples\, and
the need to scale up to enormous data\nsets. Bilinear methods\, such as In
ductive Matrix Completion~(IMC)\,\nenable us to handle missing values and
output features in practice\,\nwhile coming with theoretical guarantees. N
onlinear methods such as\nnonlinear IMC and DSSM (Deep Semantic Similarity
Model) enable more\npowerful models that are used in practice in real-lif
e applications.\nHowever\, inference in these models scales linearly with
the size of\nthe output space. In order to scale up\, I will present the P
rediction\nfor Enormous and Correlated Output Spaces (PECOS) framework\, t
hat\nperforms prediction in three phases: (i) in the first phase\, the\nou
tput space is organized using a semantic indexing scheme\, (ii) in\nthe se
cond phase\, the indexing is used to narrow down the output space\nby orde
rs of magnitude using a machine learned matching scheme\, and\n(iii) in th
e third phase\, the matched items are ranked by a final\nranking scheme. T
he versatility and modularity of PECOS allows for\neasy plug-and-play of v
arious choices for the indexing\, matching\, and\nranking phases\, and it
is possible to ensemble various models\, each\narising from a particular c
hoice for the three phases.\n
DTSTART;TZID=America/New_York:20200827T150000
DTEND;TZID=America/New_York:20200827T163000
LAST-MODIFIED:20200831T130351Z
LOCATION:Remote Access Only - see link below
SUMMARY:Seminar on Theoretical Machine Learning
URL:https://www.ias.edu/events/seminar-theoretical-machine-learning-112
END:VEVENT
BEGIN:VEVENT
UID:168525e3-2897-436e-bebd-87ae7cd30209
DTSTAMP:20201026T224633Z
CREATED:20200831T213212Z
DESCRIPTION:Topic: Hamiltonian classification and unlinkedness of fibres in
cotangent bundles of Riemann surfaces\n\nSpeakers: Georgios Dimitroglou R
izell\n\nAffiliation: Uppsala University\n\nIn a joint work with Laurent C
ôté we show the following result. Any\nLagrangian plane in the cotangent b
undle of an open Riemann surface\nwhich coincides with a cotangent fibre o
utside of some compact subset\,\nis compactly supported Hamiltonian isotop
ic to that fibre. This result\nimplies Hamiltonian unlinkedness for Lagran
gian links in the cotangent\nbundle of a (possibly closed Riemann surface
whose components are\nHamiltonian isotopic to fibres.\n
DTSTART;TZID=America/New_York:20200904T091500
DTEND;TZID=America/New_York:20200904T104500
LAST-MODIFIED:20201012T214018Z
LOCATION:Remote Access Only
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-9
END:VEVENT
BEGIN:VEVENT
UID:3bd3bfc4-08e6-408a-9a20-171357b881ca
DTSTAMP:20201026T224633Z
CREATED:20200713T175121Z
DESCRIPTION:Topic: Statistical modeling and missing data\n\nSpeakers: Rod L
ittle\n\nAffiliation: University of Michigan\n\nAbstract: There is a very
extensive literature of statistical methods\nfor the analysis of data with
missing values. I'll provide a\nhistorical overview\, including ad-hoc ap
proaches\, statistical models\nand conditions for ignoring the missingness
mechanism\, maximum\nlikelihood methods\, factored likelihood methods\, t
he EM algorithm\,\nBayesian approaches\, multiple imputation\, and methods
based on\nestimating equations. I'll discuss some recent developments in
robust\nmodeling and missing not at random models. I'll comment briefly on
the\ndiffering perspectives of full probability modeling and more\nalgori
thmic machine learning approaches.\n
DTSTART;TZID=America/New_York:20200908T091500
DTEND;TZID=America/New_York:20200908T101500
LAST-MODIFIED:20200713T175429Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications
END:VEVENT
BEGIN:VEVENT
UID:1c30ff03-22e4-4ca8-94d4-a6d422e60df4
DTSTAMP:20201026T224633Z
CREATED:20200713T175941Z
DESCRIPTION:Topic: Supervised learning with missing values\n\nSpeakers: Jul
ie Josse\n\nAffiliation: l'Institut Polytechnique de Paris\n\nAbstract: An
abundant literature addresses missing data in an\ninferential framework:
estimating parameters and their variance from\nincomplete tables. Here\, w
e consider supervised-learning settings:\npredicting a target when missing
values appear in both training and\ntesting data. We study the seemingly-
simple case where the target to\npredict is a\nlinear function of the full
y-observed data and we show that\, in the\npresence of missing values\, th
e optimal predictor is not linear in\ngeneral. In the particular Gaussian
case\, it can be written as a\nlinear function of multiway interactions be
tween the observed data and\nthe various missing-value indicators. Due to
its intrinsic complexity\,\nwe study a simple approximation and prove gene
ralization bounds with\nfinite samples\, highlighting regimes for which ea
ch method performs\nbest. We then show that multilayer perceptrons with Re
LU activation\nfunctions can be consistent\, and can explore good trade-of
fs between\nthe true model and approximations.\n
DTSTART;TZID=America/New_York:20200908T104000
DTEND;TZID=America/New_York:20200908T110000
LAST-MODIFIED:20200904T202127Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-0
END:VEVENT
BEGIN:VEVENT
UID:a3268a08-5e22-4433-bfdb-6e087ea01098
DTSTAMP:20201026T224633Z
CREATED:20200713T180208Z
DESCRIPTION:Topic: Missing data in single cell studies: augmentation\, inte
gration\, and discovery\n\nSpeakers: Barbara Englehardt\n\nAffiliation: Pr
inceton University\n\n
DTSTART;TZID=America/New_York:20200908T110500
DTEND;TZID=America/New_York:20200908T112500
LAST-MODIFIED:20200730T130224Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-1
END:VEVENT
BEGIN:VEVENT
UID:88811064-cdae-47ff-b907-cc826663a995
DTSTAMP:20201026T224633Z
CREATED:20200715T144143Z
DESCRIPTION:Topic: Experimental Evaluation of Computer-Assisted Human Decis
ion Making: A Missing Data Approach\n\nSpeakers: Kosuke Imai\n\nAffiliatio
n: Harvard University\n\nAbstract: In today’s data-driven society\, human
beings still make\nmost critical decisions and yet they are increasingly u
tilizing\nrecommendations produced by statistical and machine learning met
hods.\nGiven the prevalence of this approach in many areas of the society
\nincluding business\, healthcare\, and public policy\, there exists an\nu
rgent need to evaluate the impact of such computer-assisted human\ndecisio
n making. Using the potential outcomes framework of causal\ninference\, we
develop a statistical methodology for assessing how\nhuman decisions are
influenced by computer-generated inputs. We apply\nthe proposed methodolog
y to the randomized evaluation of a pretrial\nrisk assessment instrument (
PRAI) in the criminal justice system. The\nPRAI is used by judges in many
states when making pretrial decisions\nabout whether an arrested individua
l should be released and under what\nconditions. A key methodological chal
lenge is to infer whether an\narrestee would commit a new crime if release
d. Hence\, this can be\nformulated as a missing data problem. We analyze h
ow this instrument\ninfluences judges’ decisions and derive an optimal PRA
I to help\njudges satisfy a range of possible fairness criteria. \n\n
DTSTART;TZID=America/New_York:20200908T115500
DTEND;TZID=America/New_York:20200908T121500
LAST-MODIFIED:20200730T130313Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-2
END:VEVENT
BEGIN:VEVENT
UID:cf3e92af-3549-4eff-8602-062997546562
DTSTAMP:20201026T224633Z
CREATED:20200715T144506Z
DESCRIPTION:Topic: Model-based clustering of high-dimensional data: Pitfall
s & solutions\n\nSpeakers: David Dunson\n\nAffiliation: Duke University\n
\nAbstract: In many applications\, it is of interest to cluster subjects\n
based on very high-dimensional data\, often in the presence of missing\nda
ta. Although discrete mixture models are routinely used\, we\ndemonstrate
pitfalls in high-dimensional settings. As we are\ninterested in characteri
zing uncertainty in clustering\, we focus on\nBayesian methods. As the dim
ension p increases\, we find that (1) MCMC\nmixing gets worse and worse\;
and (2) the true posterior often has\naberrant limiting behavior\, assigni
ng all observations to the same\ncluster or to different clusters. We prop
ose LAtent Mixtures for\nBayesian (Lamb) clustering to solve (1)-(2) by cl
ustering based on a\nlow-dimensional latent variable. We provide theoretic
al support\nshowing that the posterior over partitions approximates the po
sterior\nobtained by an oracle having knowledge of a lower-dimensional\nre
presentation of the data. Substantial gains relative to competitors\nare s
hown in simulations and the methods are applied to clustering of\nsingle c
ell RNAseq data. The methods can trivially handle missing data\nunder MAR
assumptions.\n\nJoint work with Noirrit Kiran Chandra & Tony Canale \n
DTSTART;TZID=America/New_York:20200909T120000
DTEND;TZID=America/New_York:20200909T130000
LAST-MODIFIED:20200715T144506Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-3
END:VEVENT
BEGIN:VEVENT
UID:9c168360-878c-4d6a-a744-e2be5cde560e
DTSTAMP:20201026T224633Z
CREATED:20200715T144859Z
DESCRIPTION:Topic: Causal inference with binary outcomes subject to both mi
ssingness and misclassification\n\nSpeakers: Grace Yi\n\nAffiliation: Univ
ersity of Wisconsin\, Oshkosh\n\nAbstract: Causal inference has been widel
y conducted in various fields\nand many methods have been proposed for dif
ferent settings. However\,\nfor noisy data with both mismeasurements and m
issing observations\,\nthose methods often break down. In this talk\, I wi
ll discuss a problem\nconcerning estimation of the average treatment effec
ts (ATE) when\nbinary outcomes are subject to both missingness and misclas
sification.\n\nThe asymptotic biases caused by ignoring missingness and/or
\nmisclassification will be examined. Methods of simultaneously\ncorrectin
g for missingness and misclassification effects will be\ndiscussed. Simula
tion studies are conducted to assess the performance\nof the proposed meth
ods. An application to smoking cessation data is\nreported to illustrate t
he use of the proposed methods.\n
DTSTART;TZID=America/New_York:20200909T133000
DTEND;TZID=America/New_York:20200909T135000
LAST-MODIFIED:20200730T130403Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-4
END:VEVENT
BEGIN:VEVENT
UID:bcdacbb2-47b5-48be-8205-9cb209759cd6
DTSTAMP:20201026T224633Z
CREATED:20200715T145200Z
DESCRIPTION:Topic: Co-manifold learning with missing data\n\nSpeakers: Eric
Chi\n\nAffiliation: North Carolina State University\n\nAbstract: Represen
tation learning is typically applied to only one\nmode of a data matrix\,
either its rows or columns. Yet in many\napplications\, there is an underl
ying geometry to both the rows and the\ncolumns. We propose utilizing this
coupled structure to perform\nco-manifold learning: uncovering the underl
ying geometry of both the\nrows and the columns of a given matrix\, where
we focus on a missing\ndata setting. Our unsupervised approach consists of
three components.\nWe first solve a family of optimization problems to es
timate a\ncomplete matrix at multiple scales of smoothness. We then use th
is\ncollection of smooth matrix estimates to compute pairwise distances on
\nthe rows and columns based on a new multi-scale metric that implicitly\n
introduces a coupling between the rows and the columns. Finally\, we\ncons
truct row and column representations from these multi-scale\nmetrics. We d
emonstrate that our approach outperforms competing\nmethods in both data v
isualization and clustering.\n
DTSTART;TZID=America/New_York:20200909T135500
DTEND;TZID=America/New_York:20200909T141500
LAST-MODIFIED:20200730T130459Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-5
END:VEVENT
BEGIN:VEVENT
UID:69a97c4d-427d-486a-a39a-105b40699851
DTSTAMP:20201026T224633Z
CREATED:20200715T145533Z
DESCRIPTION:Topic: Regularization and spurious correlations in sparse singl
e-cell transcriptomes\n\nSpeakers: Mickey Atwal\n\nAffiliation: Cold Sprin
g Harbor Laboratory\n\nAbstract: Recent advances in biotechnology and geno
mics have generated\ndizzying amounts of large\, noisy\, and sparse datase
ts that require\nconcomitant development of machine learning methods. The
analyses of\nsingle-cell RNA-seq data have driven the development of data
\nprocessing methods\, such as transcript abundance normalization and\nimp
utation\, to address the numerous sources of technical variability\nand mi
ssing data. While these regularization methods have been\ndemonstrated to
be effective in imputing individual gene expression\,\nthe suitability of
these methods to the inference of gene-gene\ninteractions and gene network
s have not been systematically\ninvestigated. We report that the leading p
ublished methods all induce\nwidespread and significant inflation of gene
expression correlations\nacross the genome\, resulting in erroneous infere
nces of molecular\npathways and networks. A model-agnostic correction appr
oach is\nproposed that can effectively eliminate correlation artifacts whi
lst\nstill accurately inferring gene expression levels.\n
DTSTART;TZID=America/New_York:20200909T144500
DTEND;TZID=America/New_York:20200909T150500
LAST-MODIFIED:20200730T130601Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-6
END:VEVENT
BEGIN:VEVENT
UID:23c69a60-56a8-408a-9798-272c7e2750b1
DTSTAMP:20201026T224633Z
CREATED:20200904T193333Z
DESCRIPTION:Topic: Broué’s Abelian Defect Group Conjecture I\n\nSpeakers: J
ay Taylor\n\nAffiliation: University of Southern California\; Member\, Sch
ool of Mathematics\n\nVideo: Remote Access Only\n\nThis talk will form par
t of a series of three talks focusing on\nBroué’s Abelian Defect Group Con
jecture\, which concerns the modular\nrepresentation theory of finite grou
ps. We will pay particular\nattention here to the ‘geometric’ form of the
conjecture which\nconcerns finite reductive groups such as $GL_n(q)$ and $
SL_n(q)$.\nBroué’s conjecture gives a strong structural reason for many\nn
umerical coincidences one sees amongst characters and is part of a\ngenera
l ‘local/global phenomena’ that is abundant in the theory.\nIn this first
talk we will briefly recall the necessary background\nmaterial\, get to th
e point where we can state the conjecture\, and\ndiscuss some important ex
amples.
DTSTART;TZID=America/New_York:20200909T150000
DTEND;TZID=America/New_York:20200909T170000
LAST-MODIFIED:20201002T202802Z
LOCATION:Remote Access Only
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory
END:VEVENT
BEGIN:VEVENT
UID:a31ccc9b-d975-43cb-8d60-14439b54c8c0
DTSTAMP:20201026T224633Z
CREATED:20200715T145806Z
DESCRIPTION:Topic: Statistical challenges with single cell RNA-Seq technolo
gies\n\nSpeakers: Rafael Irizarry\n\nAffiliation: Harvard University\n\nAb
stract: I will give a brief introduction to the technology followed\nby so
me exploratory data analysis demonstrating the statistical\nchallenges and
how some of these can be considered missing data\nproblems.\n
DTSTART;TZID=America/New_York:20200910T120000
DTEND;TZID=America/New_York:20200910T130000
LAST-MODIFIED:20200715T145817Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-7
END:VEVENT
BEGIN:VEVENT
UID:e77ca5a4-fe35-4206-a6aa-c752ce5e3dda
DTSTAMP:20201026T224633Z
CREATED:20200715T150138Z
DESCRIPTION:Topic: Gene expression recovery in single cell transcriptomic d
ata\n\nSpeakers: Nancy Zhang\n\nAffiliation: University of Pennsylvania\n
\nAbstract: Cells are the basic biological units of multicellular\norganis
ms. The development of single-cell technologies such as single\ncell RNA s
equencing (scRNA-seq) have enabled us to study the diversity\nof cell type
s in tissue and to elucidate the roles of individual cell\ntypes in diseas
e. Single cell RNA-seq data are noisy and sparse. The\nefficiency\, that i
s\, the proportion of transcripts in the cell that\nare eventually counted
\, can vary between 2-60%\, and can be especially\nlow in highly paralleli
zed technologies. This leads to a severe case\nof not-at-random missing da
ta\, which hinders and confounds analysis\,\nespecially for low to moderat
ely expressed genes. In this talk\, I will\ndescribe\, SAVER\, a noise red
uction and missing-data imputation\nframework for single cell RNA sequenci
ng. We illustrate how this\ncritical recovery step allows improves cell-ty
pe classification\,\nincreased power in the identification of cell type ma
rkers\, and more\naccurate assessment of gene-gene relationships at the si
ngle cell\nlevel. I will also describe a transfer learning framework based
on\ndeep neural nets to borrow information across related single cell dat
a\nsets for de-noising. Our goal is to leverage the expanding resources\no
f publicly available scRNA-seq data\, for example\, the Human Cell\nAtlas
which aims to be a comprehensive map of cell types in the human\nbody. Thr
ough this framework\, we explore the limits of data sharing:\nHow much can
be learned across cell types\, tissues\, and species? How\nuseful are dat
a from other technologies and labs in improving the\nestimates from your o
wn study? If time allows\, I will also discuss the\nimplications of such d
ata denoising to downstream statistical\ninference.\n
DTSTART;TZID=America/New_York:20200910T133000
DTEND;TZID=America/New_York:20200910T135000
LAST-MODIFIED:20200730T130650Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-8
END:VEVENT
BEGIN:VEVENT
UID:b15d6cdd-8c64-4395-a9bb-799abe9e41fa
DTSTAMP:20201026T224633Z
CREATED:20200715T150353Z
DESCRIPTION:Topic: Synthesizing medical images using generative adversarial
networks\; applications\, promises\, and pitfalls\n\nSpeakers: Sanmi Koye
jo\n\nAffiliation: University of Illinois\n\n
DTSTART;TZID=America/New_York:20200910T135500
DTEND;TZID=America/New_York:20200910T141500
LAST-MODIFIED:20200730T130758Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-9
END:VEVENT
BEGIN:VEVENT
UID:84a7e979-6718-474a-9b74-d83f912debb0
DTSTAMP:20201026T224633Z
CREATED:20200715T150713Z
DESCRIPTION:Topic: High-dimensional omics data analysis with missing values
\n\nSpeakers: Anru Zhang\n\nAffiliation: University of Wisconsin\n\nAbstra
ct: We have seen the rise of high-dimensional omics data\, e.g.\,\ngenome\
, transcriptome\, microbiome\, and proteome in recent decades. The\ndiffer
ent types of missingness in modern omics data bring up\nsignificant biolog
ical and statistical challenges. In this talk\, we\nfocus on two problems
in modern omics data analysis with missing\nvalues.\n\nFirst\, motivated b
y applications in genomic data integration\, we\npropose a new framework o
f structured matrix completion (SMC) that\ntreats structured missingness b
y design. Specifically\, our proposed\nmethod aims at efficient matrix rec
overy when a subset of the rows and\ncolumns of an approximately low-rank
matrix are observed. We provide\ntheoretical justification for the propose
d method and derive lower\nbound for the estimation errors\, which togethe
r establish the optimal\nrate of recovery over certain classes of approxim
ately low-rank\nmatrices. The method is applied to integrate several ovari
an cancer\ngenomic studies with different extent of genomic measurements\,
which\nenables us to construct more accurate prediction rules for ovarian
\ncancer survival.\n\nThen\, we address the common issues of missing count
s and the high\nvariability in the sequencing reads in the microbiome data
. We\nintroduce a surprisingly simple\, interpretable\, and efficient meth
od\nfor the estimation of compositional data regression through the lens\n
of a novel high-dimensional log-error-in-variable regression model.\nThe p
roposed method provides both corrections on sequencing data with\npossible
overdispersion and simultaneously avoids any subjective\nimputation of mi
ssing read counts. We provide theoretical\njustification with matching upp
er and lower bounds for the estimation\nerror. The merit of the procedure
is illustrated through real\nmicrobiome data analysis and simulation studi
es.\n
DTSTART;TZID=America/New_York:20200910T144500
DTEND;TZID=America/New_York:20200910T150500
LAST-MODIFIED:20200730T130849Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-10
END:VEVENT
BEGIN:VEVENT
UID:1e19011b-c828-4de8-8c42-b99c4a3c39f1
DTSTAMP:20201026T224633Z
CREATED:20200831T222343Z
DESCRIPTION:Topic: An asymptotic version of the prime power conjecture for
perfect difference sets\n\nSpeakers: Sarah Peluse\n\nAffiliation: Institu
te for Advanced Study and Princeton University\; Veblen Research Instructo
r\, School of Mathematics\n\nVideo: Simonyi 101 and Remote Access\n\nA sub
set $D$ of a finite cyclic group $Z/mZ$ is called a 'perfect\ndifference s
et' if every nonzero element of $Z/mZ$ can be written\nuniquely as the dif
ference of two elements of $D$. If such a set\nexists\, then a simple coun
ting argument shows that $m=n^2+n+1$ for\nsome nonnegative integer $n$. Si
nger constructed examples of perfect\ndifference sets in $Z/(n^2+n+1)Z$ wh
enever $n$ is a prime power\, and\nit is an old conjecture that these are
the only such n for which a\nperfect difference set exists. In this talk\,
I will discuss a proof of\nan asymptotic version of this conjecture: the
number of $n$ less than\n$N$ for which $Z/(n^2+n+1)Z$ contains a perfect d
ifference set is\n$\sim N/\log(N)$.
DTSTART;TZID=America/New_York:20200910T163000
DTEND;TZID=America/New_York:20200910T173000
LAST-MODIFIED:20200911T225308Z
LOCATION:Simonyi 101 and Remote Access
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-230
END:VEVENT
BEGIN:VEVENT
UID:010edcbe-608d-43a0-be8a-f238e1f94572
DTSTAMP:20201026T224633Z
CREATED:20200831T221530Z
DESCRIPTION:Topic: Reeb dynamics in dimension 3 and broken book decompositi
ons\n\nSpeakers: Vincent Colin\n\nAffiliation: Université de Nantes\n\nVi
deo: Remote Access Only\n\nIn a joint work with Pierre Dehornoy and Ana Re
chtman\, we prove that\non a closed 3-manifold\, every nondegenerate Reeb
vector field is\nsupported by a broken book decomposition. From this prope
rty\, we\ndeduce that in dimension 3 every nondegenerate Reeb vector field
has\neither 2 or infinitely periodic orbits and that on a closed 3-manifo
ld\nthat is not graphed\, every nondegenerate Reeb vector field has\nposit
ive topological entropy.\n
DTSTART;TZID=America/New_York:20200911T091500
DTEND;TZID=America/New_York:20200911T104500
LAST-MODIFIED:20201012T214025Z
LOCATION:Remote Access Only
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-10
END:VEVENT
BEGIN:VEVENT
UID:8647e597-0155-4c2a-ac3f-6c65fdc402f4
DTSTAMP:20201026T224633Z
CREATED:20200715T150957Z
DESCRIPTION:Topic: Metric and manifold repair for missing data\n\nSpeakers:
Anna Gilbert\n\nAffiliation: Yale University\n\nAbstract: For many machin
e learning tasks\, the input data lie on a\nlow-dimensional manifold embed
ded in a high-dimensional space and\,\nbecause of this high-dimensional st
ructure\, most algorithms\ninefficient. The typical solution is to reduce
the dimension of the\ninput data using a standard dimension reduction algo
rithms such as\n{\sc Isomap\, Laplacian Eigenmaps} or {\sc LLEs}. This app
roach\,\nhowever\, does not always work in practice as these algorithms re
quire\nthat we have somewhat ideal data. Unfortunately\, most data sets ei
ther\nhave missing entries or unacceptably noisy values. That is\, real da
ta\nare far from ideal and we cannot use these algorithms directly.\n\nIn
this talk\, we focus on the case when we have missing data. Some\ntechniqu
es\, such as matrix completion\, can be used to fill in missing\ndata but
these methods do not capture the non-linear structure of the\nmanifold. He
re\, we present a new algorithm {\sc MR-Missing} that\nextends these previ
ous algorithms and can be used to compute low\ndimensional representation
on data sets with missing entries. We\ndemonstrate the effectiveness of ou
r algorithm by running three\ndifferent experiments.\n
DTSTART;TZID=America/New_York:20200911T120000
DTEND;TZID=America/New_York:20200911T130000
LAST-MODIFIED:20200715T150957Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-11
END:VEVENT
BEGIN:VEVENT
UID:8ab34fdf-d777-4cea-9981-fb4967e4efaa
DTSTAMP:20201026T224633Z
CREATED:20200715T151224Z
DESCRIPTION:Topic: Low-rank matrix recovery from quantized or count observa
tions\n\nSpeakers: Mark Davenport\n\nAffiliation: Georgia Institute of Tec
hnology\n\nAbstract: Low-rank matrices play a fundamental role in modeling
and\ncomputational methods for signal processing and machine learning. In
\nmany applications where low-rank matrices arise\, these matrices cannot
\nbe fully sampled or directly observed\, and one encounters the problem\n
of recovering the matrix given only incomplete and indirect\nobservations.
The last decade has seen tremendous advances in both the\ntheory and algo
rithms for this setting. In this talk I will discuss\nchallenging versions
of the low-rank matrix recovery problem in\nsettings where our observatio
ns are highly quantized or consist of\nevent counts\, describing both exis
ting results as well as open\nproblems in this space.\n
DTSTART;TZID=America/New_York:20200911T133000
DTEND;TZID=America/New_York:20200911T135000
LAST-MODIFIED:20200904T202248Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-12
END:VEVENT
BEGIN:VEVENT
UID:a6c238d1-e143-46ea-b866-f9b7870c48aa
DTSTAMP:20201026T224633Z
CREATED:20200715T151457Z
DESCRIPTION:Topic: Low Algebraic Dimension Matrix Completion\n\nSpeakers: L
aura Balzano\n\nAffiliation: Member\, School of Mathematics\n\nLow rank ma
trix completion (LRMC) has received tremendous attention in\nrecent years.
The low rank assumption means that the columns (or rows)\nof the matrix t
o be completed are points on a low-dimensional linear\nvariety. This work
extends this thinking to cases where the columns\nare points on low-dimens
ional nonlinear algebraic varieties\, a problem\nwhich we call Low Algebra
ic-Dimension Matrix Completion (LADMC). We\ndiscuss two optimization appro
aches to this problem\, one kernelized\nalgorithm and one that leverages e
xisting LRMC techniques on a\ntensorized representation of the data. We al
so provide a formal\nmathematical justification for the success of our met
hod and\nexperimental results showing that the new approach outperforms\ne
xisting state-of-the-art methods for matrix completion in many\nsituations
.\n
DTSTART;TZID=America/New_York:20200911T140000
DTEND;TZID=America/New_York:20200911T142000
LAST-MODIFIED:20200730T131012Z
LOCATION:Virtual
SUMMARY:Virtual Workshop on Missing Data Challenges in Computation\, Statis
tics and Applications
URL:https://www.ias.edu/events/virtual-workshop-missing-data-challenges-com
putation-statistics-and-applications-13
END:VEVENT
BEGIN:VEVENT
UID:23e6b7e2-0d99-4a33-b0e5-626d25f9f12a
DTSTAMP:20201026T224633Z
CREATED:20200910T154025Z
DESCRIPTION:Topic: Broué’s Abelian Defect Group Conjecture II\n\nSpeakers:
Daniel Juteau\n\nAffiliation: Centre National de la Recherche Scientifique
/Université Paris Diderot\; Member\, School of Mathematics\n\nVideo: Remot
e Access Only\n\nIn this second talk about Broué’s Abelian Defect Group Co
njecture\,\nwe will explain its geometric version in the case of finite gr
oups of\nLie type: the equivalence should be induced by the cohomology com
plex\nof Deligne-Lusztig varieties. This was actually the main motivation
\nfor the conjecture in the first place. We will illustrate those ideas\nw
ith the case of $SL(2\,q)$.
DTSTART;TZID=America/New_York:20200916T150000
DTEND;TZID=America/New_York:20200916T170000
LAST-MODIFIED:20201002T202838Z
LOCATION:Remote Access Only
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-1
END:VEVENT
BEGIN:VEVENT
UID:052a2e1d-27cc-402d-bb72-99d31c4744aa
DTSTAMP:20201026T224633Z
CREATED:20200901T212257Z
DESCRIPTION:Topic: Equivariant localization\, parity sheaves\, and cyclic b
ase change\n\nSpeakers: Tony Feng\n\nAffiliation: Member\, School of Mathe
matics\n\nLafforgue and Genestier-Lafforgue have constructed the global an
d\n(semisimpliﬁed) local Langlands correspondences for arbitrary\nreductiv
e groups over function ﬁelds. I will explain some recently\nestablished pr
operties of these correspondences regarding base change\nfunctoriality: ex
istence of transfers for mod p automorphic forms\nthrough p-cyclic base ch
ange in the global correspondence\, and Tate\ncohomology realizes p-cyclic
base change in the mod p local\ncorrespondence. The proofs are based on a
combination of equivariant\nlocalization arguments (inspired by work of T
reumann-Venkatesh) and\nthe theory of parity sheaves (due to Juteau-Mautne
r-Williamson).\n
DTSTART;TZID=America/New_York:20200917T140000
DTEND;TZID=America/New_York:20200917T150000
LAST-MODIFIED:20200911T141321Z
LOCATION:Remote Access Only
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-231
END:VEVENT
BEGIN:VEVENT
UID:96ef0ab4-3584-499a-94b5-4f55d83a5e0b
DTSTAMP:20201026T224633Z
CREATED:20200901T215217Z
DESCRIPTION:Topic: Fukaya category for Landau-Ginzburg orbifolds and Berglu
nd-Hübsch homological mirror symmetry for curve singularities\n\nSpeakers:
Cheol-Hyun Cho\n\nAffiliation: Seoul National University\n\nVideo: Remote
Access Only\n\nFor a weighted homogeneous polynomial and a choice of a di
agonal\nsymmetry group\, we define a new Fukaya category based on wrapped
\nFukaya category of its Milnor fiber together with monodromy\ninformation
. It is analogous to the variation operator in singularity\ntheory. As an
application\, we formulate a complete version of\nBerglund-Hübsch homologi
cal mirror symmetry and prove it for two\nvariable cases. Namely\, given o
ne of the polynomials $f= x^p+y^q\,\nx^p+xy^q\,x^py+xy^q$ and a symmetry g
roup $G$\, we use Floer theoretic\nconstruction to obtain the transpose po
lynomial $f^t$ with the\ntranspose symmetry group $G^t$ as well as an expl
icit A-infinity\nequivalence between the new Fukaya category of $(f\,G)$ t
o the matrix\nfactorization category of $(f^t\, G^t)$. In this case\, mono
dromy is\nmirror to the restriction of LG model to a hypersurface. For ADE
\nsingularities\, Auslander-Reiten quiver for indecomposable matrix\nfacto
rizations were known from 80's\, and we find the corresponding\nLagrangian
s as well as surgery exact sequences. This is a joint work\nwith Dongwook
Choa and Wonbo Jung.
DTSTART;TZID=America/New_York:20200918T091500
DTEND;TZID=America/New_York:20200918T104500
LAST-MODIFIED:20201012T214032Z
LOCATION:Remote Access Only
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-11
END:VEVENT
BEGIN:VEVENT
UID:f9ade330-2a94-4e90-a0e0-587d3fd72c45
DTSTAMP:20201026T224633Z
CREATED:20200110T165145Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20200921T090000
DTEND;TZID=America/New_York:20200921T090000
LAST-MODIFIED:20200110T165145Z
LOCATION:
SUMMARY:IAS School of Mathematics Term I Begins
URL:https://www.ias.edu/events/ias-school-mathematics-term-i-begins
END:VEVENT
BEGIN:VEVENT
UID:1b3cf820-2d20-4331-9369-73b94131bac0
DTSTAMP:20201026T224633Z
CREATED:20200908T123826Z
DESCRIPTION:Topic: Spectral geometry on metric graphs\n\nSpeakers: Lior Alo
n\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Wolfensohn Hall
and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200922T140000
DTEND;TZID=America/New_York:20200922T141500
LAST-MODIFIED:20200924T011732Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-500
END:VEVENT
BEGIN:VEVENT
UID:0c9da9aa-e0df-4920-93fc-4b1d12ae8cae
DTSTAMP:20201026T224633Z
CREATED:20200908T124252Z
DESCRIPTION:Topic: On the (Computational) Approximability of Quadratic Maxi
mization over Convex Sets\n\nSpeakers: Vijay Bhattiprolu\n\nAffiliation: M
ember\, School of Mathematics\n\nVideo: Wolfensohn Hall and Remote Access
- see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200922T141500
DTEND;TZID=America/New_York:20200922T143000
LAST-MODIFIED:20200924T011826Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-502
END:VEVENT
BEGIN:VEVENT
UID:afe29ddb-c550-4016-9d04-54d8d861dd06
DTSTAMP:20201026T224633Z
CREATED:20200908T124326Z
DESCRIPTION:Topic: Affine Springer fibers and the small quantum group\n\nSp
eakers: Pablo Boixeda Alvarez\n\nAffiliation: Member\, School of Mathemati
cs\n\nVideo: Wolfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200922T143000
DTEND;TZID=America/New_York:20200922T144500
LAST-MODIFIED:20200924T011914Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-503
END:VEVENT
BEGIN:VEVENT
UID:3b24fd48-f983-4559-989f-aa19ddbfa299
DTSTAMP:20201026T224633Z
CREATED:20200908T125057Z
DESCRIPTION:Topic: Non smooth spaces with Ricci curvature bounded from belo
w\n\nSpeakers: Elia Bruè\, Elia Bruè\n\nAffiliation: Member\, School of Ma
thematics\n\n
DTSTART;TZID=America/New_York:20200922T160000
DTEND;TZID=America/New_York:20200922T161500
LAST-MODIFIED:20201020T153236Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-506
END:VEVENT
BEGIN:VEVENT
UID:2d356357-dcb8-42fb-abb2-1d54efe75d02
DTSTAMP:20201026T224633Z
CREATED:20200908T125037Z
DESCRIPTION:Topic: Symplectic topology of open manifolds\n\nSpeakers: Laure
nt Côté\n\nAffiliation: Member\, School of Mathematics\n\n
DTSTART;TZID=America/New_York:20200922T161500
DTEND;TZID=America/New_York:20200922T163000
LAST-MODIFIED:20200924T012224Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-505
END:VEVENT
BEGIN:VEVENT
UID:c3991de1-1845-40d1-9b14-1eb00f47a727
DTSTAMP:20201026T224633Z
CREATED:20200908T125014Z
DESCRIPTION:Topic: Modular representation theory of p-adic groups\n\nSpeake
rs: Andrea Dotto\n\nAffiliation: Member\, School of Mathematics\n\nVideo:
Wolfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200922T163000
DTEND;TZID=America/New_York:20200922T164500
LAST-MODIFIED:20200924T012301Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-504
END:VEVENT
BEGIN:VEVENT
UID:428bb8e9-73e5-49e4-a0f6-fe684f6f9dfb
DTSTAMP:20201026T224633Z
CREATED:20200908T125235Z
DESCRIPTION:Topic: A tale of two bases\n\nSpeakers: Anne Dranowski\n\nAffil
iation: Member\, School of Mathematics\n\nVideo: Wolfensohn Hall and Remot
e Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200923T140000
DTEND;TZID=America/New_York:20200923T141500
LAST-MODIFIED:20200924T012543Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-507
END:VEVENT
BEGIN:VEVENT
UID:4e773e31-d71f-44b4-80db-f4bc0bf29813
DTSTAMP:20201026T224633Z
CREATED:20200908T125300Z
DESCRIPTION:Topic: Open Problem(s) in p-Cell Theory\n\nSpeakers: Lars Jense
n\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Wolfensohn Hall
and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200923T141500
DTEND;TZID=America/New_York:20200923T143000
LAST-MODIFIED:20200924T012609Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-508
END:VEVENT
BEGIN:VEVENT
UID:3944c55b-e0f5-4a24-a2f3-b3f06983469f
DTSTAMP:20201026T224633Z
CREATED:20200908T125323Z
DESCRIPTION:Topic: Quasi-modular forms from elliptic Noether-Lefschetz theo
ry\n\nSpeakers: François Greer\n\nAffiliation: Member\, School of Mathema
tics\n\nVideo: Wolfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200923T143000
DTEND;TZID=America/New_York:20200923T144500
LAST-MODIFIED:20200924T012634Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-509
END:VEVENT
BEGIN:VEVENT
UID:0f597c40-f9e8-4c13-bb1a-5dd47ac6c0a1
DTSTAMP:20201026T224633Z
CREATED:20200908T125354Z
DESCRIPTION:Topic: Some Representations of Special Linear Groups\n\nSpeaker
s: Nate Harman\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Wo
lfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200923T160000
DTEND;TZID=America/New_York:20200923T161500
LAST-MODIFIED:20200924T012658Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-510
END:VEVENT
BEGIN:VEVENT
UID:e8c9d592-8d84-40d4-a1f9-c68d8e2409ce
DTSTAMP:20201026T224633Z
CREATED:20200908T125412Z
DESCRIPTION:Topic: Noncommutative resolutions and intersection cohomology f
or quotient singularities\n\nSpeakers: Tudor Padurariu\n\nAffiliation: Mem
ber\, School of Mathematics\n\nVideo: Wolfensohn Hall and Remote Access -
see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200923T161500
DTEND;TZID=America/New_York:20200923T163000
LAST-MODIFIED:20200924T012726Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-511
END:VEVENT
BEGIN:VEVENT
UID:9ad17099-b71b-40dc-aac7-653ab16f1b2e
DTSTAMP:20201026T224633Z
CREATED:20200908T125431Z
DESCRIPTION:Topic: On globally dissipative Euler flows\n\nSpeakers: Hyunju
Kwon\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Wolfensohn H
all and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200923T163000
DTEND;TZID=America/New_York:20200923T164500
LAST-MODIFIED:20200924T012750Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-512
END:VEVENT
BEGIN:VEVENT
UID:05551438-4608-42e6-8db8-6754894400b2
DTSTAMP:20201026T224633Z
CREATED:20200901T212443Z
DESCRIPTION:Topic: A non-archimedean definable Chow theorem\n\nSpeakers: Ab
hishek Oswal\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Remo
te Access - see Zoom link below\n\nIn recent years\, o-minimality has foun
d some striking applications to\ndiophantine geometry. The utility of o-mi
nimal structures originates\nfrom the remarkably tame topological properti
es satisfied by sets\ndefinable in such structures. Despite the rigidity t
hat it imposes\,\nthe theory is sufficiently flexible to allow for a range
of analytic\nconstructions. An illustration of this `tame' property is th
e\nfollowing surprising generalization of Chow's theorem proved by\nPeterz
il and Starchenko - A closed analytic subset of a complex\nalgebraic varie
ty that is also definable in an o-minimal structure\, is\nin fact algebrai
c. While the o-minimal machinery aims to capture the\narchimedean order to
pology of the real line\, it is natural to wonder\nif such a machinery can
be set up over non-archimedean fields. In this\ntalk\, we shall explore a
non-archimedean analogue of an o-minimal\nstructure and a version of the
definable Chow theorem in this context.\n
DTSTART;TZID=America/New_York:20200924T163000
DTEND;TZID=America/New_York:20200924T173000
LAST-MODIFIED:20201001T145548Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-232
END:VEVENT
BEGIN:VEVENT
UID:58acd0a8-44c6-4fe6-a3bc-07883f9f2165
DTSTAMP:20201026T224633Z
CREATED:20200901T215248Z
DESCRIPTION:Topic: Triangulated persistence categories\n\nSpeakers: Jun Zha
ng\n\nAffiliation: Université de Montréal\n\nThis talk will discuss a new
algebraic structure called triangulated\npersistence category (TPC). It co
mbines the triangulated category\nstructure with the persistence module st
ructure. This algebraic\nstructure can be used to associate a metric topol
ogy on the object-set\nof a triangulated category\, which leads to various
dynamical questions\non a pure algebraic set-up. Many examples are natura
lly endowed with\nthe TPC structure\, for instance\, derived Fukaya catego
ry\, Tamarkin\ncategory\, etc. In this talk\, we will illustrate one algeb
raic example\nin depth via extending the Bondal-Kapranov’s classical\npre-
triangulated dg-category to a filtered version. This talk is based\non an
in-progress project joint with Paul Biran and Octav Cornea.\n
DTSTART;TZID=America/New_York:20200925T091500
DTEND;TZID=America/New_York:20200925T104500
LAST-MODIFIED:20201012T214039Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-12
END:VEVENT
BEGIN:VEVENT
UID:583d7967-1828-4c2d-8565-80bcb44981b8
DTSTAMP:20201026T224633Z
CREATED:20200908T143347Z
DESCRIPTION:Topic: Eisenstein Ideals: A Link Between Geometry and Arithmeti
c\n\nSpeakers: Emmanuel Lecouturier\n\nAffiliation: Member\, School of Mat
hematics\n\nVideo: Wolfensohn Hall and Remote Access - see Zoom link below
\n\n
DTSTART;TZID=America/New_York:20200925T140000
DTEND;TZID=America/New_York:20200925T141500
LAST-MODIFIED:20201001T145902Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-513
END:VEVENT
BEGIN:VEVENT
UID:30763dba-ff98-4d6a-9994-1c3c1fec353c
DTSTAMP:20201026T224633Z
CREATED:20200908T143429Z
DESCRIPTION:Topic: Koszul duality phenomenon for the Hecke category\n\nSpea
kers: Shotaro Makisumi\n\nAffiliation: Member\, School of Mathematics\n\nV
ideo: Wolfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200925T141500
DTEND;TZID=America/New_York:20200925T143000
LAST-MODIFIED:20201001T145932Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-515
END:VEVENT
BEGIN:VEVENT
UID:f907c38e-de2b-4668-b112-5e1f75677714
DTSTAMP:20201026T224633Z
CREATED:20200908T143714Z
DESCRIPTION:Topic: Lévy Matrices\n\nSpeakers: Patrick Lopatto\n\nAffiliatio
n: Member\, School of Mathematics\n\nVideo: Wolfensohn Hall and Remote Acc
ess - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200925T143000
DTEND;TZID=America/New_York:20200925T144500
LAST-MODIFIED:20201001T150000Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-518
END:VEVENT
BEGIN:VEVENT
UID:e9ea5c78-7b00-459a-a5a5-f3438a06eb45
DTSTAMP:20201026T224633Z
CREATED:20200908T143409Z
DESCRIPTION:Topic: Cohomology of line bundles on flag varieties\n\nSpeakers
: Linyuan Liu\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Wol
fensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200925T160000
DTEND;TZID=America/New_York:20200925T161500
LAST-MODIFIED:20201001T150125Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-514
END:VEVENT
BEGIN:VEVENT
UID:e936fb2f-9fed-45ae-bec3-87813b6a0a47
DTSTAMP:20201026T224633Z
CREATED:20200908T143547Z
DESCRIPTION:Topic: Tame topologies in non-archimedean geometry\n\nSpeakers:
Abhishek Oswal\n\nAffiliation: Member\, School of Mathematics\n\nVideo: W
olfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200925T161500
DTEND;TZID=America/New_York:20200925T163000
LAST-MODIFIED:20201001T150259Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-516
END:VEVENT
BEGIN:VEVENT
UID:49faa3d4-4bb9-4bc4-a388-854a03b72417
DTSTAMP:20201026T224633Z
CREATED:20200908T143604Z
DESCRIPTION:Topic: Applications of the trace of Frobenius: past\, present\,
and future\n\nSpeakers: Tony Feng\n\nAffiliation: Member\, School of Math
ematics\n\nVideo: Wolfensohn Hall and Remote Access - see Zoom link below
\n\n
DTSTART;TZID=America/New_York:20200925T163000
DTEND;TZID=America/New_York:20200925T164500
LAST-MODIFIED:20201001T150327Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-517
END:VEVENT
BEGIN:VEVENT
UID:832862b4-5a71-4404-b1e1-197fb1e7ee73
DTSTAMP:20201026T224633Z
CREATED:20200916T143659Z
DESCRIPTION:Topic: An introductory survey on expanders and their applicatio
ns\n\nSpeakers: Avi Wigderson\n\nAffiliation: Herbert H. Maass Professor\,
School of Mathematics\n\nVideo: Simonyi Hall 101 and Remote Access - see
Zoom link below\n\nExpander graphs are among the most useful objects in co
mputer science\nand mathematics. They have found applications in numerous
areas of\nboth. I will review their definition\, and explain some of the m
any\napplications. Time permitting\, I will also discuss some of the\ndiff
erent ways of constructing them\, and ask some of my favorite open\nproble
ms regarding them.\n
DTSTART;TZID=America/New_York:20200929T103000
DTEND;TZID=America/New_York:20200929T123000
LAST-MODIFIED:20201001T150415Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-250
END:VEVENT
BEGIN:VEVENT
UID:20cd0328-f606-4ad9-a825-8dc296da0032
DTSTAMP:20201026T224633Z
CREATED:20200908T162431Z
DESCRIPTION:Topic: Asymptotic enumeration problems on the Hamming Cube\n\nS
peakers: Jinyoung Park\n\nAffiliation: Member\, School of Mathematics\n\nV
ideo: Wolfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200929T140000
DTEND;TZID=America/New_York:20200929T141500
LAST-MODIFIED:20201001T150455Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-522
END:VEVENT
BEGIN:VEVENT
UID:d9d9a2fd-2ba3-4a9f-bc8b-2d09f5ace53b
DTSTAMP:20201026T224633Z
CREATED:20200908T162524Z
DESCRIPTION:Topic: 1% Cocycles and Finding Vertices of Squares\n\nSpeakers:
Sarah Peluse\n\nAffiliation: Institute for Advanced Study and Princeton U
niversity\; Veblen Research Instructor\, School of Mathematics\n\nVideo: W
olfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200929T141500
DTEND;TZID=America/New_York:20200929T143000
LAST-MODIFIED:20201001T150529Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-523
END:VEVENT
BEGIN:VEVENT
UID:09bbbc69-abad-4e6a-8822-bbd62ba3604d
DTSTAMP:20201026T224633Z
CREATED:20200908T162540Z
DESCRIPTION:Topic: Whittaker functions and lattice models\n\nSpeakers: Henr
ik Gustafsson\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Wol
fensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200929T143000
DTEND;TZID=America/New_York:20200929T144500
LAST-MODIFIED:20201001T150605Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-524
END:VEVENT
BEGIN:VEVENT
UID:0b393f8f-6bc0-45ff-8db2-5b6335d25113
DTSTAMP:20201026T224633Z
CREATED:20200908T162321Z
DESCRIPTION:Topic: Extension complexity of (low-dimensional) polytopes\n\nS
peakers: Lisa Sauermann\n\nAffiliation: Stanford University\; Member\, Sch
ool of Mathematics\n\nVideo: Wolfensohn Hall and Remote Access - see Zoom
link below\n\n
DTSTART;TZID=America/New_York:20200929T160000
DTEND;TZID=America/New_York:20200929T161500
LAST-MODIFIED:20201001T150733Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-519
END:VEVENT
BEGIN:VEVENT
UID:2bb9fde0-45fc-4e87-a399-6fb7a514c96c
DTSTAMP:20201026T224633Z
CREATED:20200908T162350Z
DESCRIPTION:Topic: Spectral numbers of quantum cohomologies\n\nSpeakers: Sa
ra Tukachinsky\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Wo
lfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200929T161500
DTEND;TZID=America/New_York:20200929T163000
LAST-MODIFIED:20201001T150801Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-520
END:VEVENT
BEGIN:VEVENT
UID:1aa2e5e3-5d29-43f9-924d-51c3415e651d
DTSTAMP:20201026T224633Z
CREATED:20200908T162408Z
DESCRIPTION:Topic: Falconer distance set problem\n\nSpeakers: Hong Wang\n\n
Affiliation: Member\, School of Mathematics\n\nVideo: Wolfensohn Hall and
Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20200929T163000
DTEND;TZID=America/New_York:20200929T164500
LAST-MODIFIED:20201001T150831Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-521
END:VEVENT
BEGIN:VEVENT
UID:8c5f2bff-b66a-4952-88a1-a3d341e3808c
DTSTAMP:20201026T224633Z
CREATED:20200914T142212Z
DESCRIPTION:Topic: Finite groups as algebraic groups in defining characteri
stic\n\nSpeakers: Raphaël Rouquier\n\nAffiliation: University of Californi
a\, Los Angeles\; Member\, School of Mathematics\n\nVideo: Simonyi Hall 10
1 and Remote Access\n\nWe will discuss $p$-local representation theory and
conjectures of\nBroue and Alperin\, the latter been inspired by finite gr
oups of Lie\ntype in characteristic $p$. The issue is the extent to which
the\ncategory of representations can be reconstructed from that of proper
\nparabolic subgroups. In different settings\, a Borel suffices\n(Arkhipov
-Bezrukavnikov-Ginzburg for rational representations\, Colmez\nfor $GL_2$
over $\mathbb Q_p$).
DTSTART;TZID=America/New_York:20200930T150000
DTEND;TZID=America/New_York:20200930T170000
LAST-MODIFIED:20201003T010333Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-2
END:VEVENT
BEGIN:VEVENT
UID:67f7b625-4c43-469c-9ddd-028e3cc12d91
DTSTAMP:20201026T224633Z
CREATED:20200928T150444Z
DESCRIPTION:Topic: Introduction and organizational meeting\n\nSpeakers: Aks
hay Venkatesh\n\nAffiliation: Robert and Luisa Fernholz Professor\, School
of Mathematics\n\n
DTSTART;TZID=America/New_York:20201001T100000
DTEND;TZID=America/New_York:20201001T120000
LAST-MODIFIED:20200930T160531Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar
END:VEVENT
BEGIN:VEVENT
UID:dbfc5f40-2aad-439a-9bf8-3e72cfebe536
DTSTAMP:20201026T224633Z
CREATED:20200908T162928Z
DESCRIPTION:Topic: Automorphic Periods and Relative Trace Formula\n\nSpeake
rs: Jingwei Xiao\n\nAffiliation: Institute for Advanced Study and Princeto
n University\; Veblen Research Instructor\, School of Mathematics\n\nVideo
: Wolfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20201001T140000
DTEND;TZID=America/New_York:20201001T141500
LAST-MODIFIED:20201012T225546Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-525
END:VEVENT
BEGIN:VEVENT
UID:55b52668-70ff-47b9-bf7e-ec77b107e171
DTSTAMP:20201026T224633Z
CREATED:20200908T162945Z
DESCRIPTION:Topic: The geometric Satake equivalence\n\nSpeakers: Jize Yu\n
\nAffiliation: Member\, School of Mathematics\n\nVideo: Wolfensohn Hall an
d Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20201001T141500
DTEND;TZID=America/New_York:20201001T143000
LAST-MODIFIED:20201012T225620Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-526
END:VEVENT
BEGIN:VEVENT
UID:1eab359c-4e2a-4b1f-a4e6-296bbeff3908
DTSTAMP:20201026T224633Z
CREATED:20200908T163003Z
DESCRIPTION:Topic: Representations of p-adic groups for non-experts\n\nSpea
kers: Jessica Fintzen\n\nAffiliation: University of Cambridge and Duke Uni
versity\; Member\, School of Mathematics\n\nVideo: Wolfensohn Hall and Rem
ote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20201001T143000
DTEND;TZID=America/New_York:20201001T144500
LAST-MODIFIED:20201012T225725Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-527
END:VEVENT
BEGIN:VEVENT
UID:a41675b7-7931-456f-b70c-175448f0a161
DTSTAMP:20201026T224633Z
CREATED:20200908T163025Z
DESCRIPTION:Topic: Hierarchies of contact manifolds\n\nSpeakers: Zhengyi Zh
ou\n\nAffiliation: Member\, School of Mathematics\n\nVideo: Wolfensohn Hal
l and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20201001T160000
DTEND;TZID=America/New_York:20201001T161500
LAST-MODIFIED:20201012T225801Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-528
END:VEVENT
BEGIN:VEVENT
UID:9a9db76b-ac18-4075-9b51-46b3d0f543cb
DTSTAMP:20201026T224633Z
CREATED:20200908T163043Z
DESCRIPTION:Topic: On unimodular groups allowing small measure growth\n\nSp
eakers: Ruixiang Zhang\n\nAffiliation: University of Wisconsin-Madison\; M
ember\, School of Mathematics\n\nVideo: Wolfensohn Hall and Remote Access
- see Zoom link below\n\n
DTSTART;TZID=America/New_York:20201001T161500
DTEND;TZID=America/New_York:20201001T163000
LAST-MODIFIED:20201012T225837Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-529
END:VEVENT
BEGIN:VEVENT
UID:00258872-ec92-4387-a12a-aa5c0932e024
DTSTAMP:20201026T224633Z
CREATED:20200908T163103Z
DESCRIPTION:Topic: Cohomological vanishing for moduli of curves\n\nSpeakers
: Emanuel Reinecke\n\nAffiliation: Member\, School of Mathematics\n\nVideo
: Wolfensohn Hall and Remote Access - see Zoom link below\n\n
DTSTART;TZID=America/New_York:20201001T163000
DTEND;TZID=America/New_York:20201001T164500
LAST-MODIFIED:20201012T225908Z
LOCATION:Wolfensohn Hall and Remote Access - see Zoom link below
SUMMARY:Short Talks by Postdoctoral Members
URL:https://www.ias.edu/events/short-talks-postdoctoral-members-530
END:VEVENT
BEGIN:VEVENT
UID:2d297b90-d904-49b2-baeb-b034d2e41915
DTSTAMP:20201026T224633Z
CREATED:20200901T215327Z
DESCRIPTION:Topic: Embedding ellipsoids into the one-point blowup of CP^2\n
\nSpeakers: Dusa McDuff\n\nAffiliation: Columbia University\n\nVideo: Remo
te Access - see Zoom link below\n\nThis talk reports on joint work with Ma
ria Bertozzi\, Tara Holm\, Emily\nMaw\, Grace Mwakyoma\, Ana Rita Pires\,
and Morgan Weiler on a WiSCon\nproject to investigate the embedding capaci
ty function of the\none-point blow up of $\mathbb CP^2$. We found three ne
w families of\nstaircases\, that are related by symmetries and have other
interesting\nstructural features. This talk will explain our findings and
our\nconjectures.\n
DTSTART;TZID=America/New_York:20201002T091500
DTEND;TZID=America/New_York:20201002T104500
LAST-MODIFIED:20201025T033906Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-13
END:VEVENT
BEGIN:VEVENT
UID:76e1c8cb-819d-4306-bc3c-c45cc7126028
DTSTAMP:20201026T224633Z
CREATED:20200827T122103Z
DESCRIPTION:Topic: Splitting Necklaces: Existence\, Hardness and Approximat
ion\n\nSpeakers: Noga Alon\n\nAffiliation: Princeton University\n\nVideo:
Simonyi Hall 101 and Remote Access - see Zoom link below\n\nIt is known th
at any opened necklace with beads of n types can be\npartitioned by at mos
t (k-1)n cuts into intervals that can be\ndistributed into k collections\,
each containing the same number of\nbeads of each type (up to 1). The pro
of is topological and provides no\nefficient procedure for finding such cu
ts. In fact\, for k=2 the\nproblem of finding such cuts\, and even an easi
er approximate version\nof it\, are known to be PPA hard.\n\nI will discus
s efficient online and offline algorithms for solving the\nproblem and its
approximate version by increasing the number of cuts\,\nand show that the
number of cuts for the online case is essentially\noptimal. A representat
ive result is an efficient (offline) algorithm\nthat solves the problem fo
r a necklace with n types of beads\, m beads\nof each type and k=2 by maki
ng at most n(log m+2) cuts. The method\nprovides an exponential improvemen
t of a result of Bhatt and Leighton\nfrom the 80s.\n\nJoint work with Andr
ei Graur.\n
DTSTART;TZID=America/New_York:20201005T111500
DTEND;TZID=America/New_York:20201005T121500
LAST-MODIFIED:20201012T225126Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-241
END:VEVENT
BEGIN:VEVENT
UID:6e3a62e7-c46f-4780-a8c3-009ed06bc505
DTSTAMP:20201026T224633Z
CREATED:20200905T175759Z
DESCRIPTION:Topic: How to diagonalize a functor\n\nSpeakers: Benjamin Elias
\n\nAffiliation: University of Oregon\; von Neumann Fellow\, School of Mat
hematics\n\nVideo: Simonyi Hall 101 and Remote Access - see Zoom link belo
w\n\nDiagonalization is incredibly important in every field of mathematics
.\nI am a representation theorist\, so I will start by motivating the uses
\nof diagonalization in representation theory. Then comes a brief\nintrodu
ction to categorical representation theory\, which attempts to\nlift ideas
about (linear transformations acting on vectors in a vector\nspace) to (f
unctors acting on objects in a category). This will be\nused to motivate a
nd set expectations for a new construction:\ncategorical diagonalization.
Suppose you have an operator f whose\nminimal polynomial factors into line
ar terms\, with distinct roots\n$k_0$\, $k_1$\, through $k_r$. Then the pr
ojection $p_i$ to the\n$(k_i)$-th eigenspace can be described as a polynom
ial in f\, using a\ntechnique known as Lagrange interpolation. These idemp
otents equip the\nvector space with a decomposition into eigenspaces. We t
hink of the\nprocess of finding a complete family of orthogonal idempotent
s\n$\{p_i\}$ as the diagonalization of $f$. Here is categorical\ndiagonali
zation: given a functor $F$ with some additional data (akin\nto the collec
tion of scalars)\, we construct idempotent functors $P_i$.\nThese can be u
sed to equip the category with a filtration whose\nsubquotients are eigenc
ategories. This is all joint work with Matt\nHogancamp. The goal of this t
alk is not to explain all the details of\nthis construction\, but to outli
ne a lot of the key ideas\, and give the\nflavor of the field. We will fol
low a running example involving\nmodules over the group algebra $A$ of the
group of size 2\, that is $A\n= Z[x]/(x^2-1)$. If you know what a short e
xact sequence of\n$A$-modules is\, you should have all the needed prerequi
sites for this\ntalk. It also helps to know what a complex of A-modules is
\, and a\nhomotopy equivalence of such complexes. (If you know about coher
ent\nsheaves on projective space\, then you'll have a lot of fun ignoring
my\nlecture and thinking about how to diagonalize $O(1)$\; this is one\nto
pic in a beautiful paper by Gorsky-Negut-Rasmussen.)
DTSTART;TZID=America/New_York:20201005T140000
DTEND;TZID=America/New_York:20201005T150000
LAST-MODIFIED:20201012T225209Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-347
END:VEVENT
BEGIN:VEVENT
UID:50302e86-04b7-49b8-89bb-30b77cb898ad
DTSTAMP:20201026T224633Z
CREATED:20200924T152126Z
DESCRIPTION:Topic: Quantifying nonorientability and filling multiples of em
bedded curves\n\nSpeakers: Robert Young\n\nAffiliation: New York Universit
y\; von Neumann Fellow\, School of Mathematics\n\nVideo: Remote Access - s
ee Zoom link below\n\nFilling a curve with an oriented surface can sometim
es be 'cheaper by\nthe dozen'. For example\, L. C. Young constructed a smo
oth curve drawn\non a projective plane in $\mathbb R^n$ which is only abou
t 1.5 times\nas hard to fill twice as it is to fill once and asked whether
this\nratio can be bounded below. This phenomenon is based on the\nnonori
entability of the projective plane\; we will define a new\ninvariant that
measures how nonorientable a manifold is and bound it\nby decomposing surf
aces in $\mathbb R^n$ into uniformly rectifiable\npieces.
DTSTART;TZID=America/New_York:20201005T163000
DTEND;TZID=America/New_York:20201005T173000
LAST-MODIFIED:20201012T225358Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-126
END:VEVENT
BEGIN:VEVENT
UID:95285e17-1ffe-4a96-8713-93db0cf4fc62
DTSTAMP:20201026T224633Z
CREATED:20200827T125431Z
DESCRIPTION:Topic: Simplified Lifting Theorems in Communication Complexity
via Sunflowers\n\nSpeakers: Toniann Pitassi\n\nAffiliation: University of
Toronto\; Visiting Professor\, School of Mathematics\n\nVideo: Simonyi Hal
l 101 and Remote Access - see Zoom link below\n\nIn this talk I will first
motivate lifting theorems where lower bounds\non communication complexity
for composed functions are obtained by a\ngeneral simulation theorem\, es
sentially showing that no protocol can\ndo any better than the obvious 'qu
ery' algorithm. I'll give a\nself-contained simplified proof of lifting wh
ich uses the sunflower\nlemma. The simplified proof is joint with Shachar
Lovett\, Raghu Meka\,\nIan Mertz\, and Jiapeng Zhang .
DTSTART;TZID=America/New_York:20201006T103000
DTEND;TZID=America/New_York:20201006T123000
LAST-MODIFIED:20201012T224441Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-241
END:VEVENT
BEGIN:VEVENT
UID:e7700f26-7fab-4028-8775-3db5a5d9ed06
DTSTAMP:20201026T224633Z
CREATED:20201002T170052Z
DESCRIPTION:Topic: Introduction and overview\n\nSpeakers: Peter Haine\n\nAf
filiation: Massachusetts Institute of Technology\n\n
DTSTART;TZID=America/New_York:20201006T133000
DTEND;TZID=America/New_York:20201006T153000
LAST-MODIFIED:20201006T170228Z
LOCATION:Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory
END:VEVENT
BEGIN:VEVENT
UID:fa9c7294-19c1-483b-9706-0b9ca1ddece6
DTSTAMP:20201026T224633Z
CREATED:20201002T202730Z
DESCRIPTION:Topic: Finite groups as algebraic groups in non-defining charac
teristic\n\nSpeakers: Raphaël Rouquier\n\nAffiliation: University of Calif
ornia\, Los Angeles\; Member\, School of Mathematics\n\nVideo: Simonyi Hal
l 101 and Remote Access\n\nWe will discuss the conjecture of Broue relatin
g modular\nrepresentations of finite groups of Lie type in non-defining\nc
haracteristic to those of normalizers of Levi subgroups\, with a focus\non
$GL_n$. The categories of representations can be related to\n(quantized)
Hilbert schemes of points on surfaces and one obtains two\nvariable versio
ns of decomposition numbers.
DTSTART;TZID=America/New_York:20201007T150000
DTEND;TZID=America/New_York:20201007T170000
LAST-MODIFIED:20201012T224401Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-3
END:VEVENT
BEGIN:VEVENT
UID:204a5c79-f828-4437-aa42-625f49b1473e
DTSTAMP:20201026T224633Z
CREATED:20200806T225120Z
DESCRIPTION:Topic: Robustness\, Verifiability and Privacy in ML\n\nSpeakers
: Shafi Goldwasser\n\nAffiliation: Simons Institute and University of Cali
fornia\, Berkeley\n\nCryptography and Machine Learning have shared a curio
us history: a\nscientific success for one often provided an example of an
impossible\ntask for the other. Today\, the goals of the two fields are al
igned.\nCryptographic models and tools can and should play a role in ensur
ing\nthe trustworthiness of AI and machine learning and address problems\n
such as privacy of training input\, model verification and robustness\nof
models to adversarial inputs. I will discuss three results along\nthese li
nes.
DTSTART;TZID=America/New_York:20201007T173000
DTEND;TZID=America/New_York:20201007T190000
LAST-MODIFIED:20201006T223159Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-194
END:VEVENT
BEGIN:VEVENT
UID:e06bd57b-9b51-4c99-aae9-fabbdd1c9502
DTSTAMP:20201026T224633Z
CREATED:20200930T162205Z
DESCRIPTION:Topic: Factorization Algebras\n\nSpeakers: Jacob Lurie\n\nAffil
iation: Professor\, School of Mathematics\n\n
DTSTART;TZID=America/New_York:20201008T100000
DTEND;TZID=America/New_York:20201008T120000
LAST-MODIFIED:20201013T143850Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-0
END:VEVENT
BEGIN:VEVENT
UID:34410259-0261-4cee-8505-8567a56b907a
DTSTAMP:20201026T224633Z
CREATED:20200920T141228Z
DESCRIPTION:Topic: Representations of p-adic groups and applications\n\nSpe
akers: Jessica Fintzen\n\nAffiliation: University of Cambridge and Duke Un
iversity\; Member\, School of Mathematics\n\nVideo: Remote Access - see Zo
om link below\n\nThe Langlands program is a far-reaching collection of con
jectures that\nrelate different areas of mathematics including number theo
ry and\nrepresentation theory. A fundamental problem on the representation
\ntheory side of the Langlands program is the construction of all\n(irredu
cible\, smooth\, complex) representations of p-adic groups.\n\nI will prov
ide an overview of our understanding of the representations\nof p-adic gro
ups\, with an emphasis on recent progress. I will also\noutline how new re
sults about the representation theory of p-adic\ngroups can be used to obt
ain congruences between arbitrary automorphic\nforms and automorphic forms
which are supercuspidal at p\, which is\njoint work with Sug Woo Shin. Th
is simplifies earlier constructions of\nattaching Galois representations t
o automorphic representations\, i.e.\nthe global Langlands correspondence\
, for general linear groups.\nMoreover\, our results apply to general p-ad
ic groups and have\ntherefore the potential to become widely applicable be
yond the case of\nthe general linear group.\n
DTSTART;TZID=America/New_York:20201008T140000
DTEND;TZID=America/New_York:20201008T150000
LAST-MODIFIED:20201012T224243Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-234
END:VEVENT
BEGIN:VEVENT
UID:56eaeedf-58b4-4d09-b5ad-a13ee3ebe683
DTSTAMP:20201026T224633Z
CREATED:20200901T215501Z
DESCRIPTION:Topic: The Arnold conjecture\, spectral invariants and C^0 sym
plectic topology\n\nSpeakers: Lev Buhovsky\n\nAffiliation: Tel Aviv Univer
sity\n\nVideo: Remote Access - see Zoom link below\n\nThe Arnold conjectur
e about fixed points of Hamiltonian\ndiffeomorphisms was partly motivated
by the celebrated\nPoincare-Birkhoff fixed point theorem for an area-prese
rving\nhomeomorphism of an annulus in the plane. Despite the fact that the
\nArnold conjecture was formulated in he smooth setting\, several\nattempt
s to return to the continuous setting of homeomorphisms and to\nstudy the
conjecture in this setting has been made afterwards. In this\ntalk I will
describe some old and more recent results on the subject.\nBased on a join
t work with V. Humiliere and S. Seyfaddini.\n
DTSTART;TZID=America/New_York:20201009T091500
DTEND;TZID=America/New_York:20201009T104500
LAST-MODIFIED:20201012T224041Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-14
END:VEVENT
BEGIN:VEVENT
UID:4f733cd2-1f68-4074-a1fc-25d36c3006a4
DTSTAMP:20201026T224633Z
CREATED:20200820T172436Z
DESCRIPTION:Topic: Parameters in indexed homology\n\nSpeakers: Simon Cho\n
\nAffiliation: University of Michigan\n\nVideo: Remote Access - see Zoom l
ink below\n\nMotivated by thematic similarities between persistent homolog
y and\nmagnitude homology\, we describe a simplicial construction associat
ed\nto a metric space. This construction is determined by (apart from the
\nmetric space itself) a choice of two parameters\, which we may take to\n
be real-valued. Applying homology pointwise\, we get persistent\nhomology
on one end of the possible choices of parameters\, and\nmagnitude homology
on the opposite end. Time permitting\, we describe\nsome modest applicati
ons of this perspective.\n
DTSTART;TZID=America/New_York:20201009T140000
DTEND;TZID=America/New_York:20201009T153000
LAST-MODIFIED:20201012T224139Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/events/workshop-topology-identifying-order-complex-
systems-126
END:VEVENT
BEGIN:VEVENT
UID:40c8cf42-2a6f-4157-97b4-cd2b83a0256d
DTSTAMP:20201026T224633Z
CREATED:20200827T131347Z
DESCRIPTION:Topic: Explicit near-fully X-Ramanujan graphs\n\nSpeakers: Xiny
u Wu\n\nAffiliation: Carnegie Mellon University\n\nVideo: Simonyi Hall 101
and Remote Access - see Zoom link below\n\nIn this talk I will introduce
constructions of finite graphs which\nresemble some given infinite graph b
oth in terms of their local\nneighborhoods\, and also their spectrum. Thes
e graphs can be thought of\nas expander graphs with local constraints in a
constant-sized\nneighborhood\, and generalize the notion of d-regular Ram
anujan graphs.\n\nFirst\, I will show how a 'recipe' in the form of some\n
matrix-coefficient non-commutative polynomial can be used to specify\nmany
infinite graphs\, including those arising from various graph\nproducts\,
and also generate finite graphs which are covered by the\ninfinite graph.
A recent landmark result of Bordenave and Collins\nimplies that for all su
ch graphs\, with high probability the finite\ngraphs generated with this r
ecipe also have their nontrivial spectrum\nclose to that of the infinite g
raph.\n\nNext\, I will talk about a derandomized form of this result: we p
rovide\na deterministic polynomial-time algorithm which\, for any X which
can\narise from a matrix-coefficient polynomial\, produces arbitrarily lar
ge\ngraphs G that are covered by X and have (nontrivial) spectrum at\nHaus
dorff distance at most eps from that of X.\n\nJoint work with Ryan O'Donne
ll.\n
DTSTART;TZID=America/New_York:20201012T111500
DTEND;TZID=America/New_York:20201012T121500
LAST-MODIFIED:20201012T224927Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-246
END:VEVENT
BEGIN:VEVENT
UID:2761e2f7-2558-4e9f-b276-b5f7ba5f290c
DTSTAMP:20201026T224633Z
CREATED:20200905T180738Z
DESCRIPTION:Topic: Stability\, non-approximated groups and high-dimensional
expanders\n\nSpeakers: Alexander Lubotzky\n\nAffiliation: Hebrew Universi
ty of Jerusalem\; Visiting Professor\, School of Mathematics\n\nVideo: Sim
onyi Hall 101 and Remote Access - see Zoom link below\n\nSeveral well-know
n open questions\, such as: 'are all groups sofic or\nhyperlinear?'\, have
a common form: can all groups be approximated by\nasymptotic homomorphism
s into the symmetric groups $Sym(n)$ (in the\nsofic case) or the unitary g
roups $U(n)$ (in the hyperlinear case)? In\nthe case of $U(n)$\, the quest
ion can be asked with respect to\ndifferent metrics and norms. We answer\,
for the first time\, some of\nthese versions\, showing that there exist f
initely presented groups\nwhich are not approximated by $U(n)$ with respec
t to the Frobenius\n(=$L_2$) norm and many other norms. The strategy is vi
a the notion of\n'stability': Some higher dimensional cohomology vanishing
phenomena is\nproven to imply stability. Using Garland method (a.k.a. hig
h\ndimensional expanders as quotients of Bruhat-Tits buildings) \, it is\n
shown that some non-residually-finite groups are stable and hence\ncannot
be approximated. These groups are central extensions of some\nlattices in
$p$-adic Lie groups (constructed via a $p$-adic version of\na result of De
ligne). All notions will be explained. Based on joint\nworks with M. De Ch
iffre\, L. Glebsky and A. Thom and with I.\nOppenheim.
DTSTART;TZID=America/New_York:20201012T140000
DTEND;TZID=America/New_York:20201012T150000
LAST-MODIFIED:20201012T224957Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-348
END:VEVENT
BEGIN:VEVENT
UID:f5b4df0c-de10-4b3e-9f68-dcf2c92e50b5
DTSTAMP:20201026T224633Z
CREATED:20200924T152911Z
DESCRIPTION:Topic: Towards universality of the nodal statistics on metric g
raphs\n\nSpeakers: Lior Alon\n\nAffiliation: Member\, School of Mathematic
s\n\nVideo: Simonyi Hall 101 and Remote Access - see Zoom link below\n\nTh
e study of nodal sets of Laplace eigenfunctions has intrigued many\nmathem
aticians over the years. The nodal count problem has its origins\nin the w
orks of Strum (1936) and Courant (1923) which led to questions\nthat remai
ned open to this day. One such question was the universal\nbehavior of the
nodal statistics. In 2002 Blum\, Gnutzmann and\nSmilansky observed numeri
cally that the statistical behaviors of the\n(properly rescaled) nodal cou
nt on planar billiards\, exhibit two types\nof behaviors. These behaviors
seemed to be independent of the specific\nshape of the billiards\, hence u
niversal\, and were determined by the\nsystem's classification to chaotic
or integrable. Proving this\nuniversality is still open.\n\nWe study an an
alog problem of nodal statistics on metric graphs. In\nthis talk\, I will
present a conjecture of a universal nodal statistics\nbehavior for metric
graphs and will provide new experimental and\nanalytic results supporting
the conjecture. I will describe our\nmethods of proof for certain families
of graphs\, exploiting the\nsymmetries of their secular manifolds.\n\nThi
s is a joint work with R. Band (Technion) and G. Berkolaiko (Texas\nA&M).
\n
DTSTART;TZID=America/New_York:20201012T163000
DTEND;TZID=America/New_York:20201012T173000
LAST-MODIFIED:20201012T225035Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-127
END:VEVENT
BEGIN:VEVENT
UID:b28d7637-348b-4ff1-a388-0b5d66ce7c1e
DTSTAMP:20201026T224633Z
CREATED:20200827T124355Z
DESCRIPTION:Topic: Arithmetic progressions and spectral structure\n\nSpeake
rs: Thomas Bloom\n\nAffiliation: University of Cambridge\n\nHow dense can
a set of integers be while containing no three-term\narithmetic progressio
ns? This is one of the classical problems of\nadditive combinatorics\, and
since the theorem of Roth in 1953 that\nsuch a set must have zero density
\, there has been much quantitative\nprogress in how quickly this density
must decay. \n\nIn the first half of the seminar\, I will give a survey of
the\nquantitative progress on Roth's theorem on three-term arithmetic\npr
ogressions\, culminating in the recent work of myself and Olof\nSisask\, t
hat in particular resolves the first non-trivial case of a\nfamous conject
ure of Erdős: if the sum of reciprocals diverges then A\nmust contain thre
e-term arithmetic progressions. I will give a\nhigh-level overview of the
proof of this new result\, which uses a\nblend of harmonic analysis and el
ementary combinatorial arguments.\n\nIn the second half of the seminar\, I
will discuss in depth one\nimportant component of our new proof: a struct
ural result for\nadditively non-smoothing sets. Roughly speaking\, a set i
s additively\nnon-smoothing when it grows under addition once\, but furthe
r addition\nreveals no extra structure. The first structural result for su
ch sets\nwas proved by Bateman and Katz in their work on the cap set probl
em.\nAn important part of my work with Olof Sisask was to prove a\nstructu
ral result of this kind for arbitrary groups (in particular for\nsubsets o
f the integers). In this talk I will sketch our proof of this\nstructural
result\, which uses only elementary methods\, and which\nshould have many
further applications in other problems of additive\ncombinatorics.\n
DTSTART;TZID=America/New_York:20201013T103000
DTEND;TZID=America/New_York:20201013T123000
LAST-MODIFIED:20201016T124853Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-240
END:VEVENT
BEGIN:VEVENT
UID:86271a67-c7f9-4442-abf4-0267580a8e92
DTSTAMP:20201026T224633Z
CREATED:20201002T172409Z
DESCRIPTION:Topic: Exodromy for stratified topological spaces (after MacPhe
rson)\n\nSpeakers: Remy van Dobben de Bruyn\n\nAffiliation: Institute for
Advanced Study and Princeton University\; Veblen Research Instructor\, Sch
ool of Mathematics\n\n
DTSTART;TZID=America/New_York:20201013T133000
DTEND;TZID=America/New_York:20201013T153000
LAST-MODIFIED:20201009T131019Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-0
END:VEVENT
BEGIN:VEVENT
UID:9d120a62-f34a-40ca-8b15-fb48e49a29c9
DTSTAMP:20201026T224633Z
CREATED:20200827T202621Z
DESCRIPTION:Topic: Introduction to stability and testability\n\nSpeakers: A
lexander Lubotzky\n\nAffiliation: Hebrew University of Jerusalem\; Visitin
g Professor\, School of Mathematics\n\nThe talk will be an introduction an
d a road map to the various\nconnections the topic has with other areas of
math and CS.\n
DTSTART;TZID=America/New_York:20201014T110000
DTEND;TZID=America/New_York:20201014T121500
LAST-MODIFIED:20201013T231059Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability
END:VEVENT
BEGIN:VEVENT
UID:9e7a1353-bf43-4294-91d3-7a1b3c04ebd1
DTSTAMP:20201026T224633Z
CREATED:20201008T193732Z
DESCRIPTION:Topic: An introduction to affine Grassmanians and the geometric
Satake equivalence\n\nSpeakers: Jize Yu\n\nAffiliation: Member\, School o
f Mathematics\n\nThis is the first talk in a series of three talks towards
\nunderstanding Bezrukavnikov-Finkelberg's derived geometric Satake\nequiv
alence. In this talk\, we recall the geometry of equal\ncharacteristic aff
ine Grassmannians and some of the ingredients of\nproving the geometric Sa
take equivalence in this setting.\n
DTSTART;TZID=America/New_York:20201014T150000
DTEND;TZID=America/New_York:20201014T170000
LAST-MODIFIED:20201016T140233Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-4
END:VEVENT
BEGIN:VEVENT
UID:7bab1ecf-16c3-4f73-ae41-fbf1f0e68be4
DTSTAMP:20201026T224633Z
CREATED:20200806T225404Z
DESCRIPTION:Topic: Peg problems\n\nSpeakers: Joshua Greene\n\nAffiliation:
Boston College\n\nI will discuss a little about the context and solution o
f the\nrectangular peg problem: for every smooth Jordan curve and rectangl
e\nin the Euclidean plane\, one can place four points on the curve at the
\nvertices of a rectangle similar to the one given. The solution\ninvolves
symplectic geometry in a surprising way. Joint work with\nAndrew Lobb.\n
DTSTART;TZID=America/New_York:20201014T173000
DTEND;TZID=America/New_York:20201014T190000
LAST-MODIFIED:20201014T220638Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-195
END:VEVENT
BEGIN:VEVENT
UID:b3db82d9-b62d-4ece-9424-dbd8d20165e9
DTSTAMP:20201026T224633Z
CREATED:20201009T161249Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201015T100000
DTEND;TZID=America/New_York:20201015T120000
LAST-MODIFIED:20201015T175710Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-1
END:VEVENT
BEGIN:VEVENT
UID:b07bcf2b-49ef-446c-8b93-dff057f64c89
DTSTAMP:20201026T224633Z
CREATED:20200923T155953Z
DESCRIPTION:Topic: Heights and dynamics over arbitrary fields\n\nSpeakers:
Carney Alexander\n\nAffiliation: University of Rochester\n\nClassically\,
heights are defined over number fields or transcendence\ndegree one functi
on fields. This is so that the Northcott property\,\nwhich says that sets
of points with bounded height are finite\, holds.\nHere\, expanding on wor
k of Moriwaki and Yuan-Zhang\, we show how to\ndefine arithmetic intersect
ions and heights relative to any finitely\ngenerated field extension $K/k$
\, and construct canonical heights for\npolarizable arithmetic dynamical s
ystems $f:X \to X$. These heights\nhave a corresponding Northcott property
when $k$ is $\mathbb Q$ or\n$F_q$. When $k$ is larger\, we show that Nort
hcott for canonical\nheights is conditional on the non-isotriviality of $f
: X \to X$\,\ngeneralizing work of Lang-Neron\, Baker\, and Chatzidakis-H
rushovski.\nAdditionally\, we prove the Hodge Index Theorem for arithmetic
\nintersections relative to $K/k$. Since\, when Northcott holds\,\npreperi
odic points are the same as height zero points\, this has\napplications to
dynamical systems. By the Lefschetz principle\, these\nresults can be app
lied over any field.
DTSTART;TZID=America/New_York:20201015T163000
DTEND;TZID=America/New_York:20201015T173000
LAST-MODIFIED:20201017T010637Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-235
END:VEVENT
BEGIN:VEVENT
UID:a9db1969-5e9a-46fc-ad40-51b93664a1b7
DTSTAMP:20201026T224633Z
CREATED:20200901T215521Z
DESCRIPTION:Topic: Mirror symmetry for chain type polynomials\n\nSpeakers:
Umut Varolgunes\n\nAffiliation: Stanford University\n\nI will start by exp
laining Takahashi's homological mirror symmetry\n(HMS) conjecture regardin
g invertible polynomials\, which is an open\nstring reinterpretation of Be
rglund-Hubsch-Henningson mirror symmetry.\nIn joint work with A. Polishchu
k\, we resolved this HMS conjecture in\nthe chain type case up to rigorous
proofs of general statements about\nFukaya-Seidel categories. Our proof g
oes by showing that the\ncategories in both sides are obtained from the ca
tegory Vect(k) by\napplying a recursion. I will explain this recursion cat
egorically and\nsketch the argument for why it is satisfied on the A-side
assuming the\naforementioned foundational results. If time permits\, I wil
l also\nmention what goes into the proof in the B-side.\n
DTSTART;TZID=America/New_York:20201016T091500
DTEND;TZID=America/New_York:20201016T104500
LAST-MODIFIED:20201012T214058Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-15
END:VEVENT
BEGIN:VEVENT
UID:cb04bdb0-de62-4c13-a17e-ceb746fb0d76
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201019T111500
DTEND;TZID=America/New_York:20201019T121500
LAST-MODIFIED:20201014T161535Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-242
END:VEVENT
BEGIN:VEVENT
UID:3f3b3b99-2900-4eeb-b0ae-e923c3f132d8
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201019T140000
DTEND;TZID=America/New_York:20201019T150000
LAST-MODIFIED:20201012T192418Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-349
END:VEVENT
BEGIN:VEVENT
UID:e1d7602c-ad7b-48ac-b6d7-3291cd4a9149
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201019T163000
DTEND;TZID=America/New_York:20201019T173000
LAST-MODIFIED:20201021T214509Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-128
END:VEVENT
BEGIN:VEVENT
UID:62731b26-80fa-4221-905a-a3423cf6a377
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201020T103000
DTEND;TZID=America/New_York:20201020T123000
LAST-MODIFIED:20201015T161849Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-245
END:VEVENT
BEGIN:VEVENT
UID:80cfd651-5586-4473-82ce-903a8f184350
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201020T133000
DTEND;TZID=America/New_York:20201020T153000
LAST-MODIFIED:20201013T215756Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-1
END:VEVENT
BEGIN:VEVENT
UID:3e796d7c-a4c0-445f-b6b3-af7f1ac43f5a
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201020T170000
DTEND;TZID=America/New_York:20201020T180000
LAST-MODIFIED:20201025T030417Z
LOCATION:Remote Access
SUMMARY:SL2 Seminar
URL:https://www.ias.edu/events/seminar-sl2
END:VEVENT
BEGIN:VEVENT
UID:827d7d14-a48d-4273-b792-3a5eccfca27c
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201021T110000
DTEND;TZID=America/New_York:20201021T121500
LAST-MODIFIED:20201021T221611Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and testability
URL:https://www.ias.edu/events/stability-and-testability-0
END:VEVENT
BEGIN:VEVENT
UID:db1a4ae3-63c1-46d8-bcb4-c404ee34aa0b
DTSTAMP:20201026T224633Z
CREATED:20201008T194208Z
DESCRIPTION:Topic: (Equivariant) Cohomology of the affine Grassmannian and
Ginzburg’s picture\n\nSpeakers: Linyuan Liu\n\nAffiliation: University of
Sydney\; Member\, School of Mathematics\n\nThis is the second talk in a se
ries of three talks on the derived\nSatake. I will give an overview of an
article by Ginzburg which laid\nthe foundational ideas for this equivalenc
e.\n
DTSTART;TZID=America/New_York:20201021T150000
DTEND;TZID=America/New_York:20201021T170000
LAST-MODIFIED:20201022T180137Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-5
END:VEVENT
BEGIN:VEVENT
UID:7eb2ef14-ec8c-4363-836b-08ed05cdb2f8
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201021T173000
DTEND;TZID=America/New_York:20201021T190000
LAST-MODIFIED:20201021T144120Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-196
END:VEVENT
BEGIN:VEVENT
UID:51c3443b-b9df-4bdc-824c-da0ff17e97f0
DTSTAMP:20201026T224633Z
CREATED:20201009T161503Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201022T100000
DTEND;TZID=America/New_York:20201022T120000
LAST-MODIFIED:20201021T202326Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-2
END:VEVENT
BEGIN:VEVENT
UID:ebb79768-5100-44b9-ac79-2fb6760c5f6e
DTSTAMP:20201026T224633Z
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.
DTSTART;TZID=America/New_York:20201022T163000
DTEND;TZID=America/New_York:20201022T173000
LAST-MODIFIED:20201019T144139Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-236
END:VEVENT
BEGIN:VEVENT
UID:394bdc96-6a20-43f4-a00b-8387fcdcd99b
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201023T091500
DTEND;TZID=America/New_York:20201023T104500
LAST-MODIFIED:20201023T182450Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-16
END:VEVENT
BEGIN:VEVENT
UID:db30f69f-151c-4c3b-9b7b-404b655d4e2d
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201023T140000
DTEND;TZID=America/New_York:20201023T153000
LAST-MODIFIED:20201013T144201Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/events/workshop-topology-identifying-order-complex-
systems-127
END:VEVENT
BEGIN:VEVENT
UID:afa63713-7826-4cfb-b7af-2c1dcc8ae58a
DTSTAMP:20201026T224633Z
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.
DTSTART;TZID=America/New_York:20201026T111500
DTEND;TZID=America/New_York:20201026T121500
LAST-MODIFIED:20201020T121408Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-243
END:VEVENT
BEGIN:VEVENT
UID:4a82ff98-92a8-47f7-834d-90d71f8daa8a
DTSTAMP:20201026T224633Z
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.
DTSTART;TZID=America/New_York:20201026T140000
DTEND;TZID=America/New_York:20201026T150000
LAST-MODIFIED:20201016T172942Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-350
END:VEVENT
BEGIN:VEVENT
UID:07970abb-38c3-42b6-9a39-022f8ad7ea17
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201026T163000
DTEND;TZID=America/New_York:20201026T173000
LAST-MODIFIED:20201021T214629Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-129
END:VEVENT
BEGIN:VEVENT
UID:2a204a65-0856-4b10-b862-9514d3ae9100
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201027T103000
DTEND;TZID=America/New_York:20201027T123000
LAST-MODIFIED:20201020T141952Z
LOCATION:Simonyi 101 and Remote Access
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-243
END:VEVENT
BEGIN:VEVENT
UID:9af9c9f4-356e-44c3-a533-f740cc931e3c
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201027T133000
DTEND;TZID=America/New_York:20201027T153000
LAST-MODIFIED:20201023T143643Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-2
END:VEVENT
BEGIN:VEVENT
UID:06dbc1f0-2252-4c12-832b-8a983182e8b1
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201027T160000
DTEND;TZID=America/New_York:20201027T180000
LAST-MODIFIED:20201025T030552Z
LOCATION:Remote Access
SUMMARY:Seminar on SL2
URL:https://www.ias.edu/math/events/seminar-sl2
END:VEVENT
BEGIN:VEVENT
UID:7d6d8755-18a4-408d-909b-9b0e5ace4966
DTSTAMP:20201026T224633Z
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.
DTSTART;TZID=America/New_York:20201028T110000
DTEND;TZID=America/New_York:20201028T121500
LAST-MODIFIED:20201014T165539Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability-1
END:VEVENT
BEGIN:VEVENT
UID:7d73cfee-e798-4d58-ac20-8ed18f6739c1
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201028T150000
DTEND;TZID=America/New_York:20201028T170000
LAST-MODIFIED:20201022T211717Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-6
END:VEVENT
BEGIN:VEVENT
UID:caec3d7f-d9e6-4f17-a698-6f5b194911d6
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201028T173000
DTEND;TZID=America/New_York:20201028T190000
LAST-MODIFIED:20201023T200922Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-197
END:VEVENT
BEGIN:VEVENT
UID:14e8ddbc-17be-44f0-83b1-5cdd82f45b64
DTSTAMP:20201026T224633Z
CREATED:20201009T161510Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201029T100000
DTEND;TZID=America/New_York:20201029T120000
LAST-MODIFIED:20201023T143804Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-3
END:VEVENT
BEGIN:VEVENT
UID:4f616fbb-a3d4-42af-80d9-6c53a5a84caf
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201029T163000
DTEND;TZID=America/New_York:20201029T173000
LAST-MODIFIED:20201026T171017Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-237
END:VEVENT
BEGIN:VEVENT
UID:15ae1583-9920-481a-9912-353cf025bfab
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201030T091500
DTEND;TZID=America/New_York:20201030T093500
LAST-MODIFIED:20201012T214111Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-17
END:VEVENT
BEGIN:VEVENT
UID:24357e5e-3b87-4fb7-b07b-74d628a8ac55
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201102T111500
DTEND;TZID=America/New_York:20201102T121500
LAST-MODIFIED:20201009T125504Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-247
END:VEVENT
BEGIN:VEVENT
UID:bd18a858-388d-4782-b6bd-3d0fbd034d06
DTSTAMP:20201026T224633Z
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;TZID=America/New_York:20201102T140000
DTEND;TZID=America/New_York:20201102T150000
LAST-MODIFIED:20201026T172144Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-351
END:VEVENT
BEGIN:VEVENT
UID:802412f2-372f-4fc7-9437-a7dfbb2b12c8
DTSTAMP:20201026T224633Z
CREATED:20200925T221708Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201102T163000
DTEND;TZID=America/New_York:20201102T173000
LAST-MODIFIED:20200925T222610Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-130
END:VEVENT
BEGIN:VEVENT
UID:83c418b3-0e64-4ac6-8538-c87d210fe8c9
DTSTAMP:20201026T224633Z
CREATED:20200827T131741Z
DESCRIPTION:Topic: No seminar - Election Day\n\n
DTSTART;TZID=America/New_York:20201103T103000
DTEND;TZID=America/New_York:20201103T123000
LAST-MODIFIED:20201020T132110Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-244
END:VEVENT
BEGIN:VEVENT
UID:6e9e3c8a-1424-44ad-a930-8b890340efdc
DTSTAMP:20201026T224633Z
CREATED:20201002T172432Z
DESCRIPTION:Topic: No seminar: Election Day\n\n
DTSTART;TZID=America/New_York:20201103T133000
DTEND;TZID=America/New_York:20201103T153000
LAST-MODIFIED:20201026T172416Z
LOCATION:
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-3
END:VEVENT
BEGIN:VEVENT
UID:0f112bdc-9b30-4f81-b5d8-876256e5709e
DTSTAMP:20201026T224633Z
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.
DTSTART;TZID=America/New_York:20201104T110000
DTEND;TZID=America/New_York:20201104T121500
LAST-MODIFIED:20201014T165544Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability-2
END:VEVENT
BEGIN:VEVENT
UID:f733ff63-b060-4b15-b9cf-9723c5771899
DTSTAMP:20201026T224633Z
CREATED:20201008T194223Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201104T150000
DTEND;TZID=America/New_York:20201104T170000
LAST-MODIFIED:20201008T194223Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-7
END:VEVENT
BEGIN:VEVENT
UID:66806686-85fb-4871-9d72-0a202b6c1cdc
DTSTAMP:20201026T224634Z
CREATED:20200806T231920Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Olof Sisask\n\nAffiliation:
Stockholm University\n\n
DTSTART;TZID=America/New_York:20201104T173000
DTEND;TZID=America/New_York:20201104T190000
LAST-MODIFIED:20201006T211705Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-198
END:VEVENT
BEGIN:VEVENT
UID:3d0e537e-c3d8-4804-bf21-5d97ad0943a9
DTSTAMP:20201026T224634Z
CREATED:20201009T161518Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201105T100000
DTEND;TZID=America/New_York:20201105T120000
LAST-MODIFIED:20201015T175725Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-4
END:VEVENT
BEGIN:VEVENT
UID:c71af0fb-9008-4689-bf46-375fe468d7a7
DTSTAMP:20201026T224634Z
CREATED:20200923T172356Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: William Chen\n\nAffiliation
: Columbia University\n\n
DTSTART;TZID=America/New_York:20201105T163000
DTEND;TZID=America/New_York:20201105T173000
LAST-MODIFIED:20201012T192144Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-238
END:VEVENT
BEGIN:VEVENT
UID:e962f438-ca52-4c7b-8c88-bf19e454924c
DTSTAMP:20201026T224634Z
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;TZID=America/New_York:20201106T091500
DTEND;TZID=America/New_York:20201106T104500
LAST-MODIFIED:20201026T171252Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-18
END:VEVENT
BEGIN:VEVENT
UID:7eb65953-d7d8-484e-81e4-9ff2dc3bc1fc
DTSTAMP:20201026T224634Z
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;TZID=America/New_York:20201106T140000
DTEND;TZID=America/New_York:20201106T153000
LAST-MODIFIED:20200921T222339Z
LOCATION:Remote Access Only
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/events/workshop-topology-identifying-order-complex-
systems-128
END:VEVENT
BEGIN:VEVENT
UID:225fee46-5ab1-4326-83e9-17edcc8ad6a6
DTSTAMP:20201026T224634Z
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;TZID=America/New_York:20201109T111500
DTEND;TZID=America/New_York:20201109T121500
LAST-MODIFIED:20201026T171041Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-244
END:VEVENT
BEGIN:VEVENT
UID:672abc02-0d81-464f-9fb0-0d8dedbc5d57
DTSTAMP:20201026T224634Z
CREATED:20200924T162029Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201109T140000
DTEND;TZID=America/New_York:20201109T150000
LAST-MODIFIED:20200924T164549Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-352
END:VEVENT
BEGIN:VEVENT
UID:dea09a9e-f299-4734-8b94-cdaacbd3ef96
DTSTAMP:20201026T224634Z
CREATED:20200925T221713Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201109T163000
DTEND;TZID=America/New_York:20201109T173000
LAST-MODIFIED:20200925T222616Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-131
END:VEVENT
BEGIN:VEVENT
UID:c9279c96-3c49-4694-9191-909df21a8863
DTSTAMP:20201026T224634Z
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;TZID=America/New_York:20201110T103000
DTEND;TZID=America/New_York:20201110T123000
LAST-MODIFIED:20201012T122604Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-242
END:VEVENT
BEGIN:VEVENT
UID:90a05a11-eed9-4a5c-ae5d-e86600ded98d
DTSTAMP:20201026T224634Z
CREATED:20201002T172440Z
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;TZID=America/New_York:20201110T133000
DTEND;TZID=America/New_York:20201110T153000
LAST-MODIFIED:20201013T215816Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-4
END:VEVENT
BEGIN:VEVENT
UID:2dbf2d33-387f-4216-8627-f42d44df348b
DTSTAMP:20201026T224634Z
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.
DTSTART;TZID=America/New_York:20201111T110000
DTEND;TZID=America/New_York:20201111T121500
LAST-MODIFIED:20201014T165548Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability-3
END:VEVENT
BEGIN:VEVENT
UID:e662d539-ca71-4c06-95dc-6a1dcd87bfa3
DTSTAMP:20201026T224634Z
CREATED:20201008T194231Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201111T150000
DTEND;TZID=America/New_York:20201111T170000
LAST-MODIFIED:20201008T194231Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-8
END:VEVENT
BEGIN:VEVENT
UID:3e8fc97e-2c99-44f7-a208-8d50de7472f5
DTSTAMP:20201026T224634Z
CREATED:20200806T231946Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201111T173000
DTEND;TZID=America/New_York:20201111T190000
LAST-MODIFIED:20201006T211715Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-199
END:VEVENT
BEGIN:VEVENT
UID:1c05c8da-4b78-4b1b-ad31-f84d26c589a8
DTSTAMP:20201026T224634Z
CREATED:20201009T161526Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201112T100000
DTEND;TZID=America/New_York:20201112T120000
LAST-MODIFIED:20201015T175729Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-5
END:VEVENT
BEGIN:VEVENT
UID:dae8383b-1d9e-48b6-bf64-5c6c12f18395
DTSTAMP:20201026T224634Z
CREATED:20200923T172400Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201112T163000
DTEND;TZID=America/New_York:20201112T173000
LAST-MODIFIED:20200923T172400Z
LOCATION:
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-239
END:VEVENT
BEGIN:VEVENT
UID:4e956838-9264-4559-908f-28f29f036739
DTSTAMP:20201026T224634Z
CREATED:20200901T215703Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Nicolas Sheridan\n\nAffilia
tion: University of Edinburgh\n\n
DTSTART;TZID=America/New_York:20201113T091500
DTEND;TZID=America/New_York:20201113T104500
LAST-MODIFIED:20201012T214124Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-19
END:VEVENT
BEGIN:VEVENT
UID:887725d7-0c8b-4ff6-8a19-ccd5dfbf3a9a
DTSTAMP:20201026T224634Z
CREATED:20200827T131434Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Huijia (Rachel) Lin\n\nAffi
liation: University of Washington\n\n
DTSTART;TZID=America/New_York:20201116T111500
DTEND;TZID=America/New_York:20201116T131500
LAST-MODIFIED:20200923T152701Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-248
END:VEVENT
BEGIN:VEVENT
UID:5354da13-d92d-45e0-a17e-8b521f6f467c
DTSTAMP:20201026T224634Z
CREATED:20200924T162032Z
DESCRIPTION:Topic: No seminar: workshop\n\nSpeakers: No seminar: Workshop\n
\n
DTSTART;TZID=America/New_York:20201116T140000
DTEND;TZID=America/New_York:20201116T150000
LAST-MODIFIED:20201026T171554Z
LOCATION:
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-353
END:VEVENT
BEGIN:VEVENT
UID:4547e7c8-0fa0-4760-9ff1-c77752218155
DTSTAMP:20201026T224634Z
CREATED:20200925T221718Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201116T163000
DTEND;TZID=America/New_York:20201116T173000
LAST-MODIFIED:20200925T222622Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-132
END:VEVENT
BEGIN:VEVENT
UID:cfa07394-0aac-42b6-b1df-5f641d890cf7
DTSTAMP:20201026T224634Z
CREATED:20200827T131829Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Vijay Bhattiprolu\n\nAffili
ation: Member\, School of Mathematics\n\n
DTSTART;TZID=America/New_York:20201117T103000
DTEND;TZID=America/New_York:20201117T123000
LAST-MODIFIED:20201008T155023Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-246
END:VEVENT
BEGIN:VEVENT
UID:2751deb1-bd06-4cdf-97c9-51e756769cd9
DTSTAMP:20201026T224634Z
CREATED:20201002T172447Z
DESCRIPTION:Topic: Cartesian fibrations\n\nSpeakers: Arpon Raksit\n\nAffili
ation: Stanford University\n\n
DTSTART;TZID=America/New_York:20201117T133000
DTEND;TZID=America/New_York:20201117T153000
LAST-MODIFIED:20201013T215822Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-5
END:VEVENT
BEGIN:VEVENT
UID:944dda46-69a4-439b-8c39-c97fa9ec3c9b
DTSTAMP:20201026T224634Z
CREATED:20200901T214545Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201118T110000
DTEND;TZID=America/New_York:20201118T121500
LAST-MODIFIED:20201014T165553Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability-4
END:VEVENT
BEGIN:VEVENT
UID:73a941b8-dd63-42b1-9074-a35d569f3e2c
DTSTAMP:20201026T224634Z
CREATED:20201008T194239Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201118T150000
DTEND;TZID=America/New_York:20201118T170000
LAST-MODIFIED:20201008T194239Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-9
END:VEVENT
BEGIN:VEVENT
UID:87471114-5a3f-4708-80f4-8c436c963567
DTSTAMP:20201026T224634Z
CREATED:20200806T232132Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201118T173000
DTEND;TZID=America/New_York:20201118T190000
LAST-MODIFIED:20201006T211746Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-202
END:VEVENT
BEGIN:VEVENT
UID:d6f7a473-bcbc-4d5f-ae7b-cdc71541abbb
DTSTAMP:20201026T224634Z
CREATED:20201009T161533Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201119T100000
DTEND;TZID=America/New_York:20201119T120000
LAST-MODIFIED:20201015T175734Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-6
END:VEVENT
BEGIN:VEVENT
UID:110fa360-7f60-45f3-9523-d3b16cebdc35
DTSTAMP:20201026T224634Z
CREATED:20200923T172404Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201119T163000
DTEND;TZID=America/New_York:20201119T173000
LAST-MODIFIED:20200923T172404Z
LOCATION:
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-240
END:VEVENT
BEGIN:VEVENT
UID:62409708-2e58-4e53-8ba9-4cb13fe03994
DTSTAMP:20201026T224634Z
CREATED:20200901T215726Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Paul Biran\n\nAffiliation:
Eidgenössische Technische Hochschule (ETH) Zürich\n\n
DTSTART;TZID=America/New_York:20201120T091500
DTEND;TZID=America/New_York:20201120T104500
LAST-MODIFIED:20201012T214131Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-20
END:VEVENT
BEGIN:VEVENT
UID:293f606f-6f75-4c8e-aaec-f04d5a2e3886
DTSTAMP:20201026T224634Z
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.
DTSTART;TZID=America/New_York:20201120T140000
DTEND;TZID=America/New_York:20201120T153000
LAST-MODIFIED:20200916T162607Z
LOCATION:Remote Access Only
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/events/workshop-topology-identifying-order-complex-
systems-129
END:VEVENT
BEGIN:VEVENT
UID:d26fe99d-e4a1-47d7-b020-e0d94fe8f5a6
DTSTAMP:20201026T224634Z
CREATED:20200827T131449Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Amir Yehudayoff\n\nAffiliat
ion: Technion - Israel Institute of Technology\n\n
DTSTART;TZID=America/New_York:20201123T111500
DTEND;TZID=America/New_York:20201123T121500
LAST-MODIFIED:20200923T152705Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-249
END:VEVENT
BEGIN:VEVENT
UID:89f9b3d2-a7b6-41d4-9526-8c642846deb8
DTSTAMP:20201026T224634Z
CREATED:20200924T162036Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201123T140000
DTEND;TZID=America/New_York:20201123T150000
LAST-MODIFIED:20200924T164557Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-354
END:VEVENT
BEGIN:VEVENT
UID:41602d23-db9b-4523-b9a7-90ef6696992a
DTSTAMP:20201026T224634Z
CREATED:20200925T221722Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201123T163000
DTEND;TZID=America/New_York:20201123T173000
LAST-MODIFIED:20200925T222628Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-133
END:VEVENT
BEGIN:VEVENT
UID:844989a2-3fcf-45e6-81d9-d33386981bba
DTSTAMP:20201026T224634Z
CREATED:20200827T131956Z
DESCRIPTION:Speakers: Paul Valiant\n\nAffiliation: Member\, School of Mathe
matics\n\n
DTSTART;TZID=America/New_York:20201124T103000
DTEND;TZID=America/New_York:20201124T123000
LAST-MODIFIED:20201026T182310Z
LOCATION:Simonyi 101 and Remote Access
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-247
END:VEVENT
BEGIN:VEVENT
UID:2064f1cc-00e0-4e63-9927-71a6ec2ddcb6
DTSTAMP:20201026T224634Z
CREATED:20201002T172455Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201124T133000
DTEND;TZID=America/New_York:20201124T153000
LAST-MODIFIED:20201026T181306Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-6
END:VEVENT
BEGIN:VEVENT
UID:628d76a8-ddcf-401e-a678-157d18d038e8
DTSTAMP:20201026T224634Z
CREATED:20200901T214606Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201125T110000
DTEND;TZID=America/New_York:20201125T121500
LAST-MODIFIED:20201026T181359Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability-5
END:VEVENT
BEGIN:VEVENT
UID:0c10b185-f21f-4db2-b4cd-c9f9e4b720dd
DTSTAMP:20201026T224634Z
CREATED:20201008T194246Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201125T150000
DTEND;TZID=America/New_York:20201125T170000
LAST-MODIFIED:20201026T181609Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-10
END:VEVENT
BEGIN:VEVENT
UID:ffab6367-5ca4-44f8-8133-94486cd448cd
DTSTAMP:20201026T224634Z
CREATED:20200806T232058Z
DESCRIPTION:Topic: No seminar\n\nSpeakers: NO SEMINAR\n\n
DTSTART;TZID=America/New_York:20201125T173000
DTEND;TZID=America/New_York:20201125T190000
LAST-MODIFIED:20201006T211736Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-201
END:VEVENT
BEGIN:VEVENT
UID:def95074-532c-49fb-afcf-2a548ff1e825
DTSTAMP:20201026T224634Z
CREATED:20201009T161541Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201126T100000
DTEND;TZID=America/New_York:20201126T120000
LAST-MODIFIED:20201026T181502Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-7
END:VEVENT
BEGIN:VEVENT
UID:98aae20f-b89a-4c0f-b1c3-0a70ad05c9f2
DTSTAMP:20201026T224634Z
CREATED:20200901T215804Z
DESCRIPTION:Topic: Three 20 minute research talks\n\n
DTSTART;TZID=America/New_York:20201127T091500
DTEND;TZID=America/New_York:20201127T104500
LAST-MODIFIED:20201026T181746Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-21
END:VEVENT
BEGIN:VEVENT
UID:f86631b7-6617-41d4-9e76-34fefafd04a5
DTSTAMP:20201026T224634Z
CREATED:20200827T125037Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Mary Wooters\n\nAffiliation
: Stanford University\n\n
DTSTART;TZID=America/New_York:20201130T111500
DTEND;TZID=America/New_York:20201130T121500
LAST-MODIFIED:20200923T153255Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-245
END:VEVENT
BEGIN:VEVENT
UID:7de5c75a-6bc1-424a-a4d4-f3fa62d4aedf
DTSTAMP:20201026T224634Z
CREATED:20200924T162040Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201130T140000
DTEND;TZID=America/New_York:20201130T150000
LAST-MODIFIED:20201026T181158Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-355
END:VEVENT
BEGIN:VEVENT
UID:65ee8256-44c9-41e4-9eef-c19c31ae6a24
DTSTAMP:20201026T224634Z
CREATED:20200925T221728Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201130T163000
DTEND;TZID=America/New_York:20201130T173000
LAST-MODIFIED:20200925T222634Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-134
END:VEVENT
BEGIN:VEVENT
UID:1a7004f7-7e50-4608-a767-73a46c8a4517
DTSTAMP:20201026T224634Z
CREATED:20200827T132021Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201201T103000
DTEND;TZID=America/New_York:20201201T123000
LAST-MODIFIED:20201026T180948Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-248
END:VEVENT
BEGIN:VEVENT
UID:6c3b29e4-b8de-4c71-8931-bd92b630f5d1
DTSTAMP:20201026T224634Z
CREATED:20201002T172503Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201201T133000
DTEND;TZID=America/New_York:20201201T153000
LAST-MODIFIED:20201002T172503Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-7
END:VEVENT
BEGIN:VEVENT
UID:59032f5c-a278-4557-9fa6-64060dac602e
DTSTAMP:20201026T224634Z
CREATED:20200901T214630Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201202T110000
DTEND;TZID=America/New_York:20201202T121500
LAST-MODIFIED:20201014T165602Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability-6
END:VEVENT
BEGIN:VEVENT
UID:c79c5761-fcbd-4739-8c34-50b9cd0f4779
DTSTAMP:20201026T224634Z
CREATED:20201008T194254Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201202T150000
DTEND;TZID=America/New_York:20201202T170000
LAST-MODIFIED:20201008T194254Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-11
END:VEVENT
BEGIN:VEVENT
UID:164728c9-dc2d-4e3c-8b96-95893207c9fd
DTSTAMP:20201026T224635Z
CREATED:20200806T232026Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Bianca Viray\n\nAffiliation
: University of Washington\n\n
DTSTART;TZID=America/New_York:20201202T173000
DTEND;TZID=America/New_York:20201202T190000
LAST-MODIFIED:20201006T211725Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-200
END:VEVENT
BEGIN:VEVENT
UID:b12d1183-221c-4fe7-ba32-ac8dbc149a1d
DTSTAMP:20201026T224635Z
CREATED:20201009T161548Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201203T100000
DTEND;TZID=America/New_York:20201203T120000
LAST-MODIFIED:20201015T175743Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-8
END:VEVENT
BEGIN:VEVENT
UID:2a935e29-e946-4e10-9ca7-086f24f22ec6
DTSTAMP:20201026T224635Z
CREATED:20200923T172412Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201203T163000
DTEND;TZID=America/New_York:20201203T173000
LAST-MODIFIED:20200923T172412Z
LOCATION:
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-242
END:VEVENT
BEGIN:VEVENT
UID:7ebf2acc-e2e5-465e-b6ae-705fc4f21ec8
DTSTAMP:20201026T224635Z
CREATED:20200901T215827Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Eva Miranda\n\nAffiliation:
Universitat Politècnica de Catalunya\n\n
DTSTART;TZID=America/New_York:20201204T091500
DTEND;TZID=America/New_York:20201204T104500
LAST-MODIFIED:20201012T214143Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-22
END:VEVENT
BEGIN:VEVENT
UID:2a63ccb3-d019-423d-8101-570ed1b10e5c
DTSTAMP:20201026T224635Z
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;TZID=America/New_York:20201204T140000
DTEND;TZID=America/New_York:20201204T153000
LAST-MODIFIED:20200916T162245Z
LOCATION:Remote Access Only
SUMMARY:Workshop on Topology: Identifying Order in Complex Systems
URL:https://www.ias.edu/events/workshop-topology-identifying-order-complex-
systems-130
END:VEVENT
BEGIN:VEVENT
UID:8749f427-ff8e-4b33-ab79-c7836c97f5a3
DTSTAMP:20201026T224635Z
CREATED:20200827T131517Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Sumegha Garg\n\nAffiliation
: Harvard University\n\n
DTSTART;TZID=America/New_York:20201207T111500
DTEND;TZID=America/New_York:20201207T121500
LAST-MODIFIED:20201012T123117Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar I
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-i-251
END:VEVENT
BEGIN:VEVENT
UID:d505b510-d453-44cf-a29c-3dc0c3571cdf
DTSTAMP:20201026T224635Z
CREATED:20200924T162044Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201207T140000
DTEND;TZID=America/New_York:20201207T150000
LAST-MODIFIED:20200924T164606Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-356
END:VEVENT
BEGIN:VEVENT
UID:e844960a-4441-4b5b-82dc-7b987391d3e3
DTSTAMP:20201026T224635Z
CREATED:20200925T221737Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201207T163000
DTEND;TZID=America/New_York:20201207T173000
LAST-MODIFIED:20200925T222640Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-135
END:VEVENT
BEGIN:VEVENT
UID:3d18a2fd-a5f5-4b8d-ac6a-87d5ec30c595
DTSTAMP:20201026T224635Z
CREATED:20200827T132041Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201208T103000
DTEND;TZID=America/New_York:20201208T123000
LAST-MODIFIED:20200923T153337Z
LOCATION:
SUMMARY:Computer Science/Discrete Mathematics Seminar II
URL:https://www.ias.edu/events/computer-sciencediscrete-mathematics-seminar
-ii-249
END:VEVENT
BEGIN:VEVENT
UID:4e91c5a6-d2bf-45f0-9f4b-96b1eea0eea7
DTSTAMP:20201026T224635Z
CREATED:20201002T172510Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201208T133000
DTEND;TZID=America/New_York:20201208T153000
LAST-MODIFIED:20201002T172510Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-8
END:VEVENT
BEGIN:VEVENT
UID:befa5575-b8dd-4db4-b909-c2ce5611d52a
DTSTAMP:20201026T224635Z
CREATED:20200901T214658Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201209T110000
DTEND;TZID=America/New_York:20201209T121500
LAST-MODIFIED:20201014T165607Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability-7
END:VEVENT
BEGIN:VEVENT
UID:5db77810-d8c6-4863-8314-a3ad5711da13
DTSTAMP:20201026T224635Z
CREATED:20201008T194301Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201209T150000
DTEND;TZID=America/New_York:20201209T170000
LAST-MODIFIED:20201008T194301Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-12
END:VEVENT
BEGIN:VEVENT
UID:628e392d-aaed-4761-8cd1-3ba762d38852
DTSTAMP:20201026T224635Z
CREATED:20200806T232156Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201209T173000
DTEND;TZID=America/New_York:20201209T190000
LAST-MODIFIED:20201006T211756Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-203
END:VEVENT
BEGIN:VEVENT
UID:ad8476c9-393b-4ef4-a6f2-5d3cc1ac18ca
DTSTAMP:20201026T224635Z
CREATED:20201009T161556Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201210T100000
DTEND;TZID=America/New_York:20201210T120000
LAST-MODIFIED:20201015T175748Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-9
END:VEVENT
BEGIN:VEVENT
UID:4e4df4e2-16da-4269-a22a-c6bb0b01b13a
DTSTAMP:20201026T224635Z
CREATED:20200923T172415Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201210T163000
DTEND;TZID=America/New_York:20201210T173000
LAST-MODIFIED:20200923T172415Z
LOCATION:
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-243
END:VEVENT
BEGIN:VEVENT
UID:f8a11cce-683f-4153-bee9-da37ab09cd4c
DTSTAMP:20201026T224635Z
CREATED:20200901T215902Z
DESCRIPTION:Topic: To Be Announced\n\nSpeakers: Başak Gürel\n\nAffiliation:
University of Central Florida\n\n
DTSTART;TZID=America/New_York:20201211T091500
DTEND;TZID=America/New_York:20201211T104500
LAST-MODIFIED:20201012T214152Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:IAS/PU-Montreal-Paris-Tel-Aviv Symplectic Geometry Zoominar
URL:https://www.ias.edu/events/iaspu-montreal-paris-tel-aviv-symplectic-geo
metry-zoominar-23
END:VEVENT
BEGIN:VEVENT
UID:9622b1c0-4da2-4555-8038-8ed9771933c5
DTSTAMP:20201026T224635Z
CREATED:20200924T162048Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201214T140000
DTEND;TZID=America/New_York:20201214T150000
LAST-MODIFIED:20200924T164611Z
LOCATION:Simonyi Hall 101 and Remote Access - see Zoom link below
SUMMARY:Members' Seminar
URL:https://www.ias.edu/events/members-seminar-357
END:VEVENT
BEGIN:VEVENT
UID:e4910e66-4f92-4f3f-84a1-b805871202ad
DTSTAMP:20201026T224635Z
CREATED:20200925T221742Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201214T163000
DTEND;TZID=America/New_York:20201214T173000
LAST-MODIFIED:20200925T222646Z
LOCATION:
SUMMARY:Analysis Seminar
URL:https://www.ias.edu/events/analysis-seminar-136
END:VEVENT
BEGIN:VEVENT
UID:ad7e0b5b-051a-4c36-96cd-9b22652f4482
DTSTAMP:20201026T224635Z
CREATED:20201002T172517Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201215T133000
DTEND;TZID=America/New_York:20201215T153000
LAST-MODIFIED:20201002T172517Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Working Group on Stratified Homotopy Theory
URL:https://www.ias.edu/events/working-group-stratified-homotopy-theory-9
END:VEVENT
BEGIN:VEVENT
UID:c1a46c0e-f74d-4919-8313-a393f2097d1f
DTSTAMP:20201026T224635Z
CREATED:20200901T214718Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201216T110000
DTEND;TZID=America/New_York:20201216T121500
LAST-MODIFIED:20201014T165611Z
LOCATION:Remote Access - see Zoom link below
SUMMARY:Stability and Testability
URL:https://www.ias.edu/events/stability-and-testability-8
END:VEVENT
BEGIN:VEVENT
UID:10116327-b763-4bf1-bb8c-ebcff5b194d6
DTSTAMP:20201026T224635Z
CREATED:20201008T194309Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201216T150000
DTEND;TZID=America/New_York:20201216T170000
LAST-MODIFIED:20201008T194309Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Seminar on Geometric and Modular Representation Theory
URL:https://www.ias.edu/events/seminar-geometric-and-modular-representation
-theory-13
END:VEVENT
BEGIN:VEVENT
UID:b3e1242f-e956-41cc-91af-9d746b99a1d9
DTSTAMP:20201026T224635Z
CREATED:20200806T232220Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201216T173000
DTEND;TZID=America/New_York:20201216T190000
LAST-MODIFIED:20201006T211806Z
LOCATION:Remote Access
SUMMARY:Mathematical Conversations
URL:https://www.ias.edu/events/mathematical-conversations-204
END:VEVENT
BEGIN:VEVENT
UID:8162e646-6b04-4223-8e6d-3495c7ca877f
DTSTAMP:20201026T224635Z
CREATED:20201009T161603Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201217T100000
DTEND;TZID=America/New_York:20201217T120000
LAST-MODIFIED:20201015T175752Z
LOCATION:Simonyi Hall 101 and Remote Access
SUMMARY:Moonshine Seminar
URL:https://www.ias.edu/events/moonshine-seminar-10
END:VEVENT
BEGIN:VEVENT
UID:0acc51e5-bd11-4a24-a377-2ec6015bb5e3
DTSTAMP:20201026T224635Z
CREATED:20200923T172421Z
DESCRIPTION:Topic: To Be Announced\n\n
DTSTART;TZID=America/New_York:20201217T163000
DTEND;TZID=America/New_York:20201217T173000
LAST-MODIFIED:20200923T172421Z
LOCATION:
SUMMARY:Joint IAS/Princeton University Number Theory Seminar
URL:https://www.ias.edu/events/joint-iasprinceton-university-number-theory-
seminar-244
END:VEVENT
BEGIN:VEVENT
UID:8e20dc2e-4702-47c4-ac73-624ba3849ea4
DTSTAMP:20201026T224635Z
CREATED:20200110T165522Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20201218T180000
DTEND;TZID=America/New_York:20201218T180000
LAST-MODIFIED:20200110T165522Z
LOCATION:
SUMMARY:IAS School of Mathematics Term I Ends
URL:https://www.ias.edu/events/ias-school-mathematics-term-i-ends
END:VEVENT
BEGIN:VEVENT
UID:406a282f-72cc-4971-a640-fadcc0c09050
DTSTAMP:20201026T224635Z
CREATED:20200110T165737Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20210111T090000
DTEND;TZID=America/New_York:20210111T090000
LAST-MODIFIED:20200110T165737Z
LOCATION:
SUMMARY:IAS School of Mathematics Term II Begins
URL:https://www.ias.edu/events/ias-school-mathematics-term-ii-begins-0
END:VEVENT
BEGIN:VEVENT
UID:15235e4f-950d-471c-bc04-63bc61c729e3
DTSTAMP:20201026T224635Z
CREATED:20200110T165817Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20210409T180000
DTEND;TZID=America/New_York:20210409T180000
LAST-MODIFIED:20200110T165817Z
LOCATION:
SUMMARY:IAS School of Mathematics Term II Ends
URL:https://www.ias.edu/events/ias-school-mathematics-term-ii-ends-0
END:VEVENT
BEGIN:VEVENT
UID:552c59a2-d327-4b90-8920-04f72d0fa08f
DTSTAMP:20201026T224635Z
CREATED:20200110T181253Z
DESCRIPTION:
DTSTART;TZID=America/New_York:20210920T090000
DTEND;TZID=America/New_York:20210920T090000
LAST-MODIFIED:20200110T181253Z
LOCATION:
SUMMARY:IAS School of Mathematics Term I Begins
URL:https://www.ias.edu/events/ias-school-mathematics-term-i-begins-0
END:VEVENT
END:VCALENDAR