Events and Activities

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

Nov
21
2024

Combinatorics of Fundamental Physics Workshop

Organizers: Nima Arkani-Hamed, June Huh, Thomas Lam, and Bernd Sturmfels

This event aims to foster collaboration between mathematicians and physicists. The focus will be on the intersection of combinatorial geometry and fundamental physics, covering...

Nov
21
2024

Joint PU/IAS Number Theory

Quadratic Characters With Non-Negative Partial Sums
Kannan Soundararajan
3:30pm|314 Fine Hall

Are there infintely many quadratic characters (for instance, the Legendre symbol mod p) for which the partial sums are always non-negative? Although only 0% of characters can have this property, numerical work (most recently by Kalmynin) suggests...

Nov
22
2024

Special Group Theory Seminar

Train Track Automata for Outer Automorphisms of Free Groups and Geodesics in Outer Space
9:00am|Simonyi 101

The outer automorphism group of the free group Out(F_r) acts as the isometry group on the deformation space of weighted graphs, Culler-Vogtmann Outer space CV_r. The train track theory of Bestvina-Feighn-Handel bridges studying topological...

Nov
22
2024

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

New Invariants for Hamiltonian Isotopy Classes of Monotone Lagrangian Torus Fibers
Felix Schlenk
9:15am|Remote Access

Based on the exotic Lagrangian tori constructed in CP$^2$ by Vianna and Galkin-Mikhalkin, we construct for each Markov triple three monotone Lagrangian tori in the 4-ball, and for triples with distinct entries show that these tori lie in different...

Nov
22
2024

Special Group Theory Seminar

Detecting Stationary Measure Classes
Kunal Chawla
9:45am|Simonyi 101

A random walk on a hyperbolic group G will converge almost surely to the boundary, defining a stationary measure at infinity. When G is a cocompact fuchsian group, this boundary is the circle, and when the random walk is finitely supported it is...