Previous Conferences & Workshops

Jun
18
2020

Joint IAS/Princeton University Number Theory Seminar

Independence of ℓ for Frobenius conjugacy classes attached to abelian varieties
3:00pm|https://theias.zoom.us/j/959183254

Let $A$ be an abelian variety over a number field $E\subset \mathbb{C}$ and let $v$ be a place of good reduction lying over a prime $p$. For a prime $\ell\neq p$, a result of Deligne implies that upon replacing $E$ by a finite extension, the Galois...

Jun
18
2020

Theoretical Machine Learning Seminar

The challenges of model-based reinforcement learning and how to overcome them
Csaba Szepesvari
3:00pm|Remote Access Only - see link below

Some believe that truly effective and efficient reinforcement learning algorithms must explicitly construct and explicitly reason with models that capture the causal structure of the world. In short, model-based reinforcement learning is not...

Jun
17
2020

Mathematical Conversations

Infinite dimensional Hamiltonian systems: when hard problems become harder
5:30pm|Remote Access Only

In this talk I will first recall three classical theorems in the theory of finite dimensional Hamiltonian systems, then I will use the periodic nonlinear Schrodinger equation as an example of an infinite dimensional Hamiltonian system and I will...

Jun
16
2020

Theoretical Machine Learning Seminar

On learning in the presence of biased data and strategic behavior
Avrim Blum
3:00pm|Remote Access Only - see link below

In this talk I will discuss two lines of work involving learning in the presence of biased data and strategic behavior. In the first, we ask whether fairness constraints on learning algorithms can actually improve the accuracy of the classifier...

Jun
11
2020

Joint IAS/Princeton University Number Theory Seminar

New constraints on the Galois configurations of algebraic integers in the complex plane
3:00pm|https://theias.zoom.us/j/959183254

Fekete (1923) discovered the notion of transfinite diameter while studying the possible configurations of Galois orbits of algebraic integers in the complex plane. Based purely on the fact that the discriminants of monic integer irreducible...

Jun
11
2020

Theoretical Machine Learning Seminar

On Langevin Dynamics in Machine Learning
Michael I. Jordan
3:00pm|Remote Access Only - see link below

Langevin diffusions are continuous-time stochastic processes that are based on the gradient of a potential function. As such they have many connections---some known and many still to be explored---to gradient-based machine learning. I'll discuss...

Jun
09
2020

Theoretical Machine Learning Seminar

What Do Our Models Learn?
Aleksander Madry
12:30pm|Remote Access Only - see link below

Large-scale vision benchmarks have driven---and often even defined---progress in machine learning. However, these benchmarks are merely proxies for the real-world tasks we actually care about. How well do our benchmarks capture such tasks?

In this...

Jun
05
2020

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

Three Short Research Talks
Morgan Weiler, Joé Brendel, Abror Pirnapasov
9:00am|https://princeton.zoom.us/j/745635914

Morgan Weiler, Rice University:Infinite staircases of symplectic embeddings of ellipsoids into Hirzebruch surfaces

Gromov nonsqueezing tells us that symplectic embeddings are governed by more complex obstructions than volume. In particular, in...

Jun
04
2020

Joint IAS/Princeton University Number Theory Seminar

Dynamical generalizations of the Prime Number Theorem and disjointness of additive and multiplicative actions
Florian Richter
3:00pm|https://theias.zoom.us/j/959183254

 

One of the fundamental challenges in number theory is to understand the intricate way in which the additive and multiplicative structures in the integers intertwine. We will explore a dynamical approach to this topic. After introducing a new...