Previous Conferences & Workshops

Oct
19
2020

Analysis Seminar

Spectral Statistics of Lévy Matrices
4:30pm|Simonyi Hall 101 and Remote Access

Lévy matrices are symmetric random matrices whose entries are independent alpha-stable laws. Such distributions have infinite variance, and when alpha is less than 1, infinite mean. In the latter case these matrices are conjectured to exhibit a...

Oct
19
2020

Members’ Seminar

Log-concavity, matroids and expanders
2:00pm|Simonyi Hall 101 and Remote Access

Matroids are combinatorial objects that model various types of independence. They appear several fields mathematics, including graph theory, combinatorial optimization, and algebraic geometry. In this talk, I will introduce the theory of matroids...

Oct
19
2020

Computer Science/Discrete Mathematics Seminar I

A Parallel Repetition Theorem for the GHZ Game
Justin Holmgren
11:15am|Simonyi Hall 101 and Remote Access - see Zoom link below

We prove that parallel repetition of the (3-player) GHZ game reduces the value of the game polynomially fast to 0. That is, the value of the GHZ game repeated in parallel t times is at most $t^{-\Omega(1)}. Previously, only a bound of roughly 1 /...

Oct
16
2020

Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar

Mirror symmetry for chain type polynomials
Umut Varolgunes
9:15am|Remote Access

I will start by explaining Takahashi's homological mirror symmetry (HMS) conjecture regarding invertible polynomials, which is an open string reinterpretation of Berglund-Hubsch-Henningson mirror symmetry. In joint work with A. Polishchuk, we...

Oct
15
2020

Joint IAS/Princeton University Number Theory Seminar

Heights and dynamics over arbitrary fields
Carney Alexander
4:30pm|Remote Access

Classically, heights are defined over number fields or transcendence degree one function fields. This is so that the Northcott property, which says that sets of points with bounded height are finite, holds. Here, expanding on work of Moriwaki and...

Oct
14
2020

Mathematical Conversations

Peg problems
Joshua Greene
5:30pm|Remote Access

I will discuss a little about the context and solution of the rectangular peg problem: for every smooth Jordan curve and rectangle in the Euclidean plane, one can place four points on the curve at the vertices of a rectangle similar to the one given...

Oct
14
2020

Geometric and Modular Representation Theory Seminar

An introduction to affine Grassmanians and the geometric Satake equivalence
3:00pm|Simonyi Hall 101 and Remote Access

This is the first talk in a series of three talks towards understanding Bezrukavnikov-Finkelberg's derived geometric Satake equivalence. In this talk, we recall the geometry of equal characteristic affine Grassmannians and some of the ingredients of...

Oct
14
2020

Stability and Testability

Introduction to stability and testability
11:00am|Remote Access

The talk will be an introduction and a road map to the various connections the topic has with other areas of math and CS.