Previous Conferences & Workshops

Nov
04
2022

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

Lagrangian Cobordisms, Enriched Knot Diagrams, and Algebraic Invariants
9:15am|Remote Access

 We introduce new invariants to the existence of Lagrangian cobordisms in R^4. These are obtained by studying holomorphic disks with corners on Lagrangian tangles, which are Lagrangian cobordisms with flat, immersed boundaries.

We develop...

Nov
03
2022

Joint IAS/PU Number Theory Seminar

Applications of the Endoscopic Classification to Statistics of Cohomological Automorphic Representations on Unitary Groups
Rahul Dalal
4:30pm|Simonyi Hall 101 and Remote Access

Consider the family of automorphic representations on some unitary group with fixed (possibly non-tempered) cohomological representation $\pi_0$ at infinity and level dividing some finite upper bound. We compute statistics of this family as the...

Nov
03
2022

Verlinde Dimension Formula

Verlinde Dimension Formula for the Space of Conformal Blocks and the Moduli of G-bundles
10:15am|Simonyi 101 and Remote Access

Let G be a simply-connected complex semisimple algebraic group and let C be a smooth projective curve of any genus. Then, the moduli space of semistable G-bundles on C admits so called determinant line bundles. E. Verlinde conjectured a remarkable...

Nov
02
2022

Mathematical Conversations

Information Geometry: What and Why
6:00pm|Birch Garden, Simons Hall

Information geometry studies the mathematical properties of probabilistic models. Classically, we view the parameter space of a model as a Riemannian manifold, and use tools from differential geometry to study properties of the parameterized class...

Nov
02
2022

Analysis and Mathematical Physics

Geometric Measure Theory on Non Smooth Spaces with Lower Ricci Curvature Bounds
Daniele Semola
4:30pm|Simonyi 101 and Remote Access

There is a celebrated connection between minimal (or constant mean curvature) hypersurfaces and Ricci curvature in Riemannian Geometry, often boiling down to the presence of a Ricci term in the second variation formula for the area. The first goal...

Nov
01
2022

Special Year Research Seminar

Sets With Small $l^1$ Fourier Norm
Thomas Bloom
2:00pm|Simonyi 101 and Remote Access

A famous conjecture of Littlewood states that the Fourier transform of every set of N integers has $l^1$ norm at least log(N), up to a constant multiplicative factor. This was proved independently by McGehee-Pigno-Smith and Konyagin in the 1980s...

Oct
31
2022

Members' Colloquium

Polynomials Over $\mathbb{Z}$ and $\mathbb{Q}$: Counting and Freeness
2:00pm|Simonyi Hall 101 and Remote Access - see Zoom link below

Humans have been thinking about polynomial equations over the integers, or over the rational numbers, for many years. Despite this, their secrets are tightly locked up and it is hard to know what to expect, even in simple looking cases. In this talk...