Previous Conferences & Workshops

Feb
27
2023

Workshop on Dynamics, Discrete Analysis and Multiplicative Number Theory

Hardy-Littlewood and Chowla Type Conjectures in the Presence of a Siegel Zero
10:00am|Simonyi Hall 101 and Remote Access

Abstract: We discuss some consequences of the existence of a Siegel zero for various questions relating to the distribution of the prime numbers, and in particular to conjectures of Hardy-Littlewood and Chowla type.  This is joint work with Joni...

Feb
24
2023

Probability Seminar

High-Dimensional Limit Theorems for Stochastic Gradient Descent: Effective Dynamics and Critical Scaling
Gérard Ben Arous
11:15am|Simonyi 101 and Remote Access

This is a joint work with Reza Gheissari (Northwestern) and Aukosh Jagannath (Waterloo), Outstanding paper award at NeurIPS 2022. We study the scaling limits of stochastic gradient descent (SGD) with constant step-size in the high-dimensional regime...

Feb
24
2023

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

Floer Theory and Framed Cobordisms Between Exact Lagrangian Submanifolds
Noah Porcelli
9:15am|Remote Access

Lagrangian Floer theory is a useful tool for studying the structure of the homology of Lagrangian submanifolds. In some cases, it can be used to detect more- we show it can detect the framed bordism class of certain Lagrangians and in particular...

Feb
23
2023

Joint IAS/PU Number Theory Seminar

Applications of the Relative Trace Formula
4:30pm|Simonyi Hall 101 and Remote Access

I discuss the spectral and arithmetic side of the relative trace formula of Kuznetsov type for congruence subgroups of SL(n, Z) with applications to automorphic density theorems. A particular focus is on properties of general Kloosterman sums as...

Feb
22
2023

Analysis and Mathematical Physics

A tricritical point in the Blume-Capel model
Trishen Gunaratnam
3:00pm|Simonyi Hall 101 and Remote Access

This talk will be about a ferromagnetic spin system called the Blume-Capel model. It was introduced in the '60s to model an exotic multi-critical phase transition observed in the magnetisation of uranium oxide. Mathematically speaking, the model can...

Feb
22
2023

Special Year Learning Seminar

Automorphic Density Theorems
10:30am|Simonyi 101 and Remote Access

A density theorem for L-functions is quantitative measure of the possible failure of the Riemann Hypothesis. In his 1990 ICM talk, Sarnak introduced the notion of density theorems for families of automorphic forms, measuring the possible failure of...