Previous Conferences & Workshops

Nov
13
2025

Joint PU/IAS Number Theory

Spectral Properties of Arithmetic Manifolds
Alex Bartel
3:30pm|Fine 110, Princeton University

I will report on joint work with Aurel Page on a number/representation theoretic approach to the question "Can you hear the shape of a drum". We use quaternion algebras over number fields to construct pairs of manifolds that "sound the same", but...

Nov
13
2025

Special Year Research Seminar

Isomonodromic Deformations of Flat Bundles and Codimension of Hodge Loci
Hank Morris
1:00pm|Simonyi 101

We give a lower bound on the codimension of a component of the non-abelian Hodge locus within a leaf of the isomonodromy foliation on the relative de Rham moduli space of flat vector bundles on an algebraic curve. The bound follows from a more...

Nov
12
2025

Mathematical Conversations

Speaking of Values ...
6:00pm|Simons Hall Dilworth Room

I will talk very briefly about what number theorists call special values of $zeta$ and L-functions. I will start with some familiar, classical equalities and will attempt to touch upon some less familiar (mostly conjectural and very far reaching)...

Nov
12
2025

Special Year Learning Seminar

Intro to Hodge Theory
2:00pm|Simonyi 101

A Hodge structure is a certain linear algebraic datum.  Importantly, the cohomology groups of any smooth projective algebraic variety come equipped with Hodge structures which encode the integrals of algebraic differential forms over topological...

Nov
11
2025

Joint IAS/PU Groups and Dynamics Seminar

Stiffness and Rigidity in Random Dynamical Systems
Aaron Brown
4:30pm|314 Fine Hall

I will discuss random walks on manifolds and pose questions of stiffness and rigidity of stationary measures.  In the case of conservative random walks, I will discuss criteria that guarantee stiffness of stationary measures and certain rigidity...

Nov
11
2025

Joint IAS/PU Symplectic Geometry Seminar

Hamiltonian Dynamics on General Symplectic Manifolds
Shaoyun Bai
1:00pm|Fine Hall 401

Quantitative aspects of Hamiltonian Floer theory have been proven useful in studying Hamiltonian dynamics. In recent years, cohomological operations with characteristic p coefficients have also generated surprising results of Hamiltonian...

Nov
11
2025

Computer Science/Discrete Mathematics Seminar II

Hard Functions from on High: Local List Decoding from HDX
10:30am|Simonyi 101 and Remote Access

Can we encode data in a way that it is recoverable even when 1) most data becomes corrupted, and 2) we can only read a sub-constant fraction of the database? This is the central question of local list decoding, a powerful tool from coding theory...

Nov
10
2025

Joint IAS/PU Arithmetic Geometry

Anabelian Geometry via p-adic Character Varieties
Ben Heuer
3:30pm|Princeton University, Fine Hall 224

$p$-adic character varieties are rigid analytic moduli spaces of $p$-adic representations of fundamental groups. For curves, I will explain how these varieties lead to a non-abelian generalisation of the $p$-adic Hodge-Tate decomposition, by way of...

Nov
10
2025

Members' Colloquium

Categorical Local Langlands Correspondence and Applications
1:30pm|Simonyi 101 and Remote Access

Langlands, inspired by his work on classification of representations of real groups, initiated a program of classifying representations of certain topological groups associated to reductive groups in terms of Langlands parameters. In the recent...

Nov
10
2025

Computer Science/Discrete Mathematics Seminar I

On Beck-Fiala and Komlós Conjectures
Nikhil Bansal
11:00am|Simonyi Hall 101 and Remote Access

A conjecture of Komlós states that the discrepancy of any collection of unit vectors is $O(1)$, i.e., for any matrix A with unit columns, there is a vector x with -1,1 entries such that $|Ax|_\infty = O(1)$. The related Beck-Fiala conjecture states...