Previous Conferences & Workshops
10:00am|Simonyi Hall 101 and Remote Access
In 1979, Kaufman constructed a remarkable surjective Lipschitz
map from a cube to a square whose derivative has rank $1$ almost
everywhere. In this talk, we will present some higher-dimensional
generalizations of Kaufman's construction that lead to...
Derived Equivariant Cohomology of the affine Grassmannian and Bezrukavnikov and Finkelberg’s equivalences
3:00pm|Simonyi Hall 101 and Remote Access
This is the third talk in a series of three talks on the derived
Satake equivalence. I will give an overview of the article of
Bezrukavnikov and Finkelberg which explains how the equivariant
derived category of the affine Grassmannian can be...
Stability, testability and property (T)
Oren Beker
We show that if $G=\langle S | E\rangle$ is a discrete group
with Property (T) then $E$, as a system of equations over $S$, is
not stable (under a mild condition). That is, $E$ has approximate
solutions in symmetric groups $Sym(n)$, $n \geq 1$, that...
Simple Modules for SL2 via BN-Pairs
Quick introduction to quasicategories
1:30pm|Simonyi Hall 101 and Remote Access
On the extension complexity of random polytopes
10:30am|Simonyi 101 and Remote Access
Sometimes, it is possible to represent a complicated polytope as
a projection of a much simpler polytope. To quantify this
phenomenon, the extension complexity of a polytope P is defined to
be the minimum number of facets in a (possibly higher...
Kolmogorov, Onsager and a stochastic model for turbulence
We will briefly review Kolmogorov’s (41) theory of homogeneous
turbulence and Onsager’s (49) conjecture that in 3-dimensional
turbulent flows energy dissipation might exist even in the limit of
vanishing viscosity. Although over the past 60 years...
2:00pm|Simonyi Hall 101 and Remote Access
You can make a paper Moebius band by starting with a $1$ by $L$
rectangle, giving it a twist, and then gluing the ends together.
The question is: How short can you make $L$ and still succeed in
making the thing? This question goes back to B. Halpern...
Fractionally Log-Concave and Sector-Stable Polynomials: Counting Planar Matchings and More
Nima Anari
11:15am|Remote Access - see Zoom link below
We introduce two new notions for polynomials associated with
discrete set-valued probability distributions. These notions
generalize well-studied properties like real-stability and
log-concavity, but unlike them robustly degrade under a number
of...