Events and Activities

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

Apr
03
2025

Special Year Seminar II

Newton-Okounkov Bodies for Minuscule Homogeneous Spaces and Beyond
Charles Wang
10:00am|Simonyi 101

Given a triple (X,π,s) consisting of a homogeneous space X=G/P, a dominant weight π giving a projective embedding of X, and a reduced expression s for the minimal coset representative of w_0 in the parabolic quotient W/W_P, we construct a polytope...

Apr
03
2025

What is...?

What is the Leau-Fatou Flower Theorem?
1:00pm|Simonyi Classroom (S-114)

I will give an overview of the classical study of local complex dynamics in one dimension, and the more recent study in several complex variables; with an emphasis on the `neutral’ case, that is when the local behavior is neither attracting nor...

Apr
03
2025

Joint PU/IAS Number Theory

Tamely Ramified Pro-P Extensions of Number Fields
Ravi Ramakrishna
3:30pm|*Princeton University, Fine 214*

In recent work with Hajir, Larsen and Maire, we have proved that a large class of finitely generated pro-p groups G can be realized as tamely ramified extensions of a number field K, though ramification at an infinite number of primes is required...

Apr
07
2025

Members' Colloquium

Barcodes in Topology and Analysis
1:00pm|Simonyi 101 and Remote Access

Persistence modules and their associated barcodes were intensively studied since the early 2000s with a view towards applied mathematics. Recently they have also found numerous applications in pure mathematics. We will discuss a few examples from...

Apr
08
2025

Computer Science/Discrete Mathematics Seminar II

Cosystolic Expansion
10:30am|Simonyi 101 and Remote Access

High dimensional expansion comes in two flavors: spectral, which relates to random walks;  and cosystolic, which relates to chains of linear maps. The later is a more mysterious notion, which turns out related to a variety of applications such as...

Apr
08
2025

Symplectic Geometry Seminar

Compactness Problems in Counting Special Lagrangians and Fueter Sections
Saman Habibi Esfahani
1:00pm|Simonyi 101 and Remote Access

This talk is based on joint work with Yang Li. I will discuss the problem of counting special Lagrangians in Calabi-Yau 3-folds and Fueter sections to define new numerical and Floer-theoretic invariants. The key challenges are the non-compactness...

Apr
08
2025

Joint IAS/PU Groups and Dynamics Seminar

Short Curves of End-Periodic Mapping Tori
Brandis Whitfield
4:30pm|Simonyi 101

Fibered 3-manifolds are those constructed via surface homeomorphisms. Given such a manifold with pseudo-Anosov monodromy, much is already known about how topological data of the mapping class determine geometric information about the hyperbolic 3...

Apr
09
2025

Special Year Seminar I

KP Solitons, Tropical Curves, and Voronoi Cells
2:00pm|Simonyi 101

The Kadomtsev-Petviashvili (KP) Equation has deep connections to algebraic curves, with solutions constructed from Riemann theta functions in the style of Krichever. As a curve undergoes tropical degeneration, its theta function simplifies to a...