Previous Conferences & Workshops

Jan
15
2025

Connections to Schubert Calculus Learning Seminar

Three Proofs Of The Reverse Khovanskii-Teissier Inequality
Sergio Cristancho
3:30pm|Simonyi Classroom (S-114)

The reverse Khovanskii-Teissier inequality is a three term inequality for nef divisors which first appeared in the context of Kähler geometry. It provides an upper bound on a product of two divisors in terms of products with the third, hence its...

Jan
14
2025

Symplectic Geometry Seminar

Reeb Orbits Frequently Intersecting a Symplectic Surface
Michael Hutchings
1:00pm|Simonyi 101 and Remote Access

Consider a contact three-manifold, and within it a symplectic surface with boundary on Reeb orbits. We show that assuming a certain inequality on the rotation numbers of the boundary Reeb orbits, there must exist Reeb orbits which intersect the...

Jan
14
2025

Computer Science/Discrete Mathematics Seminar II

Random Matrices From $GL_n(q)$ Sampled by Words
10:30am|Simonyi Classroom (S-114) and Remote Access

Every word in a free group induces a probability distribution on every finite group by substituting the letters of w by uniformly random elements of the group. The connection between such distributions on the symmetric group and the poset of...

Jan
13
2025

Joint IAS/PU Arithmetic Geometry

New tensor categories : work of N. Harman, S. Kriz, A. Snowden, N. Snyder ... .
3:35pm|Bloomberg Hall Lecture Hall - note location Change

Pretannakian categories, that is k-linear abelian categories with finite dimensional Hom groups, given with a commutative and associative tensor product, with a unit object (such that End(1)=k) and duals, can be viewed as generalizations of linear...

Jan
13
2025

Computer Science/Discrete Mathematics Seminar I

Structure and Randomness for Finite-field Polynomials are (almost) Equivalent
Guy Moshkovitz
10:30am|Simonyi 101 and Remote Access

What can be said about a system of polynomial equations over a finite field if its number of solutions deviates from that of a random system? Answer: Roughly, one of the polynomials (or a linear combination thereof) can be written in terms of “few”...

Dec
20
2024

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

Three 20 Minute Research Talks
Jae Hee Lee, Simon Vialaret and Kenneth Blakey
9:15am|Remote Access

Jae Hee Lee (Stanford University) :Quantum Steenrod Operations, p-curvature, and Representation Theory

Quantum Steenrod operations are deformations of classical Steenrod operations on mod p cohomology defined by counts of genus 0 holomorphic curves...