Previous Conferences & Workshops

Feb
26
2018

Computer Science/Discrete Mathematics Seminar I

A Tight Bound for Hypergraph Regularity
11:00am|Simonyi Hall 101

The hypergraph regularity lemma — the extension of Szemeredi's graph regularity lemma to the setting of k-graphs — is one of the most celebrated combinatorial results obtained in the past decade. By now there are various (very different) proofs of...

Feb
22
2018

Theoretical Machine Learning Seminar

On the Optimization of Deep Networks: Implicit Acceleration by Overparameterization
12:15pm|White-Levy Room

Conventional wisdom in deep learning states that increasing depth improves expressiveness but complicates optimization. In this talk I will argue that, sometimes, increasing depth can speed up optimization.

The effect of depth on optimization is...

Feb
21
2018

Mathematical Conversations

Dimension and support of the harmonic measure or What do Brownian travelers see?
6:00pm|Dilworth Room

Harmonic measure of a portion of the boundary is the probability that a Brownian traveler starting inside the domain exits through this portion of the boundary. It is also a simplest building block of any harmonic function in a domain. Some...

Feb
20
2018

Joint IAS/Princeton University Number Theory Seminar

Diophantine approximation with arithmetically small points
4:45pm|Simonyi Hall 101

Consider a pair $(X,\widehat{L})$ of a regular and projective algebraic variety over $\mathbb{Q}$ and a semipositive adelically metrized line bundle $\widehat{L}$ over $X$. Assume that all of Zhang's successive minima of the pair $(X,\widehat{L})$...

Feb
20
2018

Locally Symmetric Spaces Seminar

Local to global relations of periods
Erez Lapid
1:45pm|Simonyi Hall 101

Rankin-Selberg integrals provide factorization of certain period integrals into local counterparts. Other, more elusive, periods can be studied in principle by the relative trace formula and other methods.

Following Waldspurger, Ichino-Ikeda...

Feb
20
2018

Computer Science/Discrete Mathematics Seminar II

Some closure results for polynomial factorization
Mrinal Kumar
10:30am|Simonyi Hall 101

In a sequence of extremely fundamental results in the 80's, Kaltofen showed that any factor of n-variate polynomial with degree and arithmetic circuit size poly(n) has an arithmetic circuit of size poly(n). In other words, the complexity class VP is...

Feb
19
2018

Joint IAS/Princeton University Symplectic Geometry Seminar

Quantum periods theorem for Landau-Ginzburg potentials
Dmitry Tonkonog
4:00pm|Fine Hall 322, Princeton University

I will report on recently discovered relations between closed Gromov-Witten theory of a Fano variety and open Gromov-Witten theory of Lagrangian submanifolds contained in it. The focus will be on the result saying that the quantum period of a Fano...