Previous Conferences & Workshops

Oct
16
2023

Symplectic Geometry Seminar

Fixed Points of Small Hamiltonian Diffeomorphisms and the Flux Conjectures
Marcelo S Atallah
12:30pm|Simonyi 101 and Remote Access

The $C^0$ flux conjecture predicts that a symplectic diffeomorphism that can be $C^0$ approximated by a Hamiltonian diffeomorphism is itself Hamiltonian. We describe how the flux conjecture relates to new instances of the strong Arnol’d conjecture...

Oct
16
2023

Computer Science/Discrete Mathematics Seminar I

A Combinatorial Characterization of Minimax in 0/1 Games
Shay Moran
11:15am|Simonyi 101 and Remote Access

We will discuss a generalization of the celebrated Minimax Theorem (von Neumann, 1928) for binary zero-sum games. A simple game which fails to satisfy Minimax is Ephraim Kishon's “Jewish Poker” (see [1,2] below). In this game, each player picks a...

Oct
13
2023

Joint IAS/PU Analysis Seminar

Immortal Solutions of the Kähler-Ricci Flow
Valentino Tosatti
4:00pm|Princeton University, Fine Hall 314

I will discuss the problem of understanding the long-time behavior of Ricci flow on a compact Kähler manifold, assuming that a solution exists for all positive time. Inspired by an analogy with the minimal model program in algebraic geometry, Song...

Oct
13
2023

Joint IAS/PU Analysis Seminar

On the Long-Time Behavior of Solutions to the 2d Euler Equation
Tarek Elgindi
2:30pm|Princeton University, Fine Hall 314

We will describe a recent result on the stability of twisting in 2d Hamiltonian flows and its application to various questions concerning the long-time behavior of 2d Euler solutions. We will look at stability properties of stationary solutions...

Oct
13
2023

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

Symplectic Cohomology Relative to a Smooth Divisor
Paul Seidel
9:15am|Remote Access

(This is a somewhat old-fashioned talk.) I will review the definition of symplectic cohomology and its deformation, for the complement of a smooth anticanonical divisor in a monotone symplectic manifold. The deformed group, with the parameter q...

Oct
12
2023

Joint PU/IAS Number Theory

Modularity of Trianguline Galois Representations
Rebecca Bellovin
4:30pm|Simonyi Hall 101 and Remote Access

The Fontaine-Mazur conjecture (proved by Kisin and Emerton) says that (under certain technical hypotheses) a Galois representation $\rho:Gal_Q\rightarrow GL_2(\overline{Q}_p)$ is modular if it is unramified outside finitely many places and de Rham...