Previous Conferences & Workshops

Nov
01
2021

Computer Science/Discrete Mathematics Seminar I

Parallel Repetition for the GHZ Game: A Simpler Proof
Uma Girish
11:15am|Wolfensohn Hall and Remote Access

We give a new proof of the fact that the parallel repetition of the (3-player) GHZ game reduces the value of the game to zero polynomially quickly.  That is, we show that the value of the n-fold parallel repetition of the GHZ game is at most n^{-...

Nov
01
2021

Workshop on the h-principle and beyond

Overtwisted = Tight in 3 dimensions
Francisco Presas Mata
10:15am|Simonyi Hall 101 and Remote Access

Abstract: We prove the equivalence of Eliashberg overtwisted $h$—principle and  the Eliashberg-Mishachev classification of contact structures in the tight $3$-ball. I.e. we prove that simple algebraic topology computations takes us from one result...

Nov
01
2021

Workshop on the h-principle and beyond

9:00am

Organizers: Kai Cieliebak, Camillo De Lellis, Yakov Eliashberg, Emmy Murphy, László Székelyhidi Jr.

The aim of the workshop was to bring together researchers working in different areas of geometry, dynamical systems, and PDEs which have been and...

Nov
01
2021

Workshop on the h-principle and beyond

Looking at Euler flows through a contact mirror: Universality, Turing completeness and undecidability
Eva Miranda
9:00am|Simonyi Hall 101 and Remote Access

Abstract: The dynamics of an inviscid and incompressible fluid flow on a Riemannian manifold is governed by the Euler equations. Recently, Tao [6, 7, 8] launched a programme to address the global existence problem for the Euler and Navier-Stokes...

Oct
29
2021

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

Detecting non-trivial elements in the spaces of Legendrian knots via Algebraic K-theory
Yakov Eliashberg
9:15am|Remote Access

This talk is based on a joint work with Thomas Kragh. Using the generating function theory we split inject homotopy groups of pseudo-isotopy and/or h-cobordism spaces into various spaces of Legendrian manifolds, e.g. the space of Legendrian unknots...

Oct
28
2021

Joint IAS/Princeton University Number Theory Seminar

Reducible fibers and monodromy of polynomial maps
Danny Neftin
4:30pm|Simonyi Hall 101 and Remote Access

For a polynomial $f\in \mathbb Q[x]$, Hilbert's irreducibility theorem asserts that the fiber $f^{-1}(a)$ is irreducible over $\mathbb Q$ for all values $a\in \mathbb Q$ outside a "thin" set of exceptions $R_f$. The problem of describing $R_f$ is...

Oct
28
2021

Discussions in Analysis and Geometry

Reading seminar on papers of Honda-Huang and Breem-Christopher, exploring the notion of convexity in high dimensional contact geometry
2:00pm|Simonyi Hall 101 and Remote Access
Oct
27
2021

Mathematical Conversations

Gaussian Elimination with Complete Pivoting: Searching for a Needle in a Haystack
John C Urschel
6:00pm|Birch Garden, Simons Hall

Gaussian elimination is one of the oldest and most popular techniques for factoring a matrix. The growth of entries in Gaussian elimination is an important practical problem. Modern results as well as practice show that entry growth is not a...