Previous Conferences & Workshops

Nov
22
2022

Special Year Research Seminar

Almost all Dynamically Syndetic Sets are Multiplicatively Thick
Daniel Glasscock
2:00pm|Simonyi 101 and Remote Access

If a set of integers is syndetic (finitely many translates cover the integers), must it contain two integers whose ratio is a square?  No one knows.  In the broader context of the disjointness between additive and multiplicative configurations and...

Nov
22
2022

Computer Science/Discrete Mathematics Seminar II

The Polynomial Method in Communication Complexity
10:30am|Simonyi Hall 101 and Remote Access

A powerful technique developed and extended in the past decade in communication complexity is the so-called "lifting theorems."  The idea is to translate the hardness results from "easier" models, e.g., query complexity, polynomial degrees, to the...

Nov
21
2022

Joint IAS/Princeton University Symplectic Geometry Seminar

A Connected Sum Formula of Embedded Contact Homology
Luya Wang
4:00pm|Fine 314 and Remote Access

The contact connected sum is a well-understood operation for contact manifolds. I will focus on the 3-dimensional case and the Weinstein 1-handle model for the contact connected sum. I will discuss how pseudo-holomorphic curves in the...

Nov
21
2022

3D Dimer Block Party

Scott Sheffield and Catherine Wolfram
3:15pm|Simonyi Hall Common Room

Come play with 250 physical wooden blocks and join us in thinking about a simple open problem for dimers in 3D. No prior knowledge required. We’ll start with an ~10 minute presentation explaining the problem and then suggest some things for everyone...

Nov
21
2022

Members' Colloquium

Local Systems, Positivity and (Non-Commutative) Markov Numbers
2:00pm|Simonyi Hall 101 and Remote Access - see Zoom link below

Markov numbers are positive integers that appear in solutions of the equation x^2+y^2+z^2=3xyz. They also appear naturally when one tries to parametrize positive $SL_2(R)$-local systems on a one punctured torus. In this talk I will explain that...

Nov
21
2022

Computer Science/Discrete Mathematics Seminar I

Strong XOR Lemma for Communication with Bounded Rounds
Huacheng Yu
11:15am|Simonyi 101 and Remote Access

In this talk, we show a strong XOR lemma for bounded-round two-player randomized communication.  For a function f:X×Y→{0,1}, the n-fold XOR function f^⊕n:X^n×Y^n→{0,1} maps n input pairs (x_1,...,x_n), (y_1,...,y_n) to the XOR of the n output bits f...

Nov
18
2022

Probability Seminar

Lozenge Tilings and the Gaussian Free Field on a Cylinder
Marianna Russkikh
11:15am|Simonyi 101 and Remote Access

We discuss new results on lozenge tilings on an infinite cylinder, which may be analyzed using the periodic Schur process introduced by Borodin. Under one variant of the q^vol measure, corresponding to random cylindric partitions, the height...

Nov
17
2022

Joint IAS/PU Number Theory Seminar

Toward a Theory of Prime Detecting Sieves
4:30pm|Simonyi Hall 101 and Remote Access

Given a set of integers, we wish to know how many primes there are in the set.  Modern tools allow us to obtain an asymptotic for the number of primes, or at least a lower bound of the expected order, assuming certain strength Type-I information...