Events and Activities

Explore current and upcoming events and activities happening at the Institute for Advanced Study.

Feb
14
2025

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

Lagrangian Intersections and the Shape Invariant
Richard Hind
9:15am|Remote Access

We will outline the proof of an intersection result between embedded Lagrangian tori and certain 1 parameter families of product Lagrangian tori in the 4 dimensional symplectic cylinder. The theorem can be applied to give new computations of the...

Feb
17
2025

Joint IAS/PU Arithmetic Geometry

Local Monodromy of constructible sheaves
Deepam Patel
3:35pm|Simonyi 101 and Remote Access

Let X be a complex algebraic variety, and X à D a proper morphism to a small disk which is smooth away from the origin. In this setting, the higher direct images of the constant sheaf form a local system on the punctured disk, and the Local...

Feb
18
2025

Computer Science/Discrete Mathematics Seminar II

“Sharp” Selector Processes
10:30am|Simonyi 101 and Remote Access

Positive selector processes are natural stochastic processes driven by sparse Bernoulli random variables. They play an important role in the study of suprema of general stochastic processes, and in particular, Talagrand posed the selector process...

Feb
18
2025

Symplectic Geometry Seminar

On certain $C^0$-aspects of contactomorphism groups
Vukašin Stojisavljević
1:00pm|Simonyi 101 and Remote Access

We will explore certain $C^0$-rigidity and flexibility phenomena in the study of contact transformations. In particular, we will show how the dichotomy between contact squeezing and non-squeezing is reflected in the group of contact homeomorphisms...

Feb
18
2025

Analysis and Mathematical Physics

On Minkowski's Monotonicity Problem
Ramon van Handel
2:30pm|Simonyi Hall 101 and Remote Access

More than 120 years ago, Minkowski published a seminal paper that laid the foundation for the field of convex geometry (as well as several other areas of mathematics). Despite numerous advances in the intervening years, there are fundamental...

Feb
18
2025

Joint IAS/PU Groups and Dynamics Seminar

Minimum Entropies of Braids
Chi Cheuk Tsang
4:30pm|Simonyi 101

Every braid can be thought of as a homeomorphism of a punctured disc. Morally, the more complicated a braid is, the more dynamics is contained in the corresponding homeomorphism, which one can quantify using topological entropy. In particular, one...

Feb
19
2025

Mathematical Conversations

Cohomology Theories and Formal Groups
6:00pm|Simons Hall Dilworth Room

In the 1960's, Quillen found a remarkable relationship between a certain class of cohomology theories and the theory of formal groups. This discovery has had a profound impact on algebraic topology. In this talk, I'll give a brief exposition of...

Feb
20
2025

Special Year Seminar II

Operadic Structures in Matroid Theory
10:00am|Simonyi 101

I will start by a gentle introduction to operadic structures by drawing a parallel with classical associative structures. Then we will see how those structures can be applied to matroid theory via three examples: Chow rings, Orlik--Solomon algebras...