Previous Conferences & Workshops

Feb
14
2023

Special Year Research Seminar

Incidence Theory and Uniform Distribution in Higher Dimensions
Alex Iosevich
2:00pm|Simonyi 101 and Remote Access

Incidence bound for points and spheres in higher dimensions generally becomes trivial in higher dimensions due to the existence of the Lenz example consisting of two orthogonal circles in ${\Bbb R}^4$, and the corresponding construction in higher...

Feb
14
2023

Computer Science/Discrete Mathematics Seminar II

Rainbow Matchings in Hypergraphs
10:30am|Simonyi Hall 101 and Remote Access

Suppose we are given matchings $M_1,....,M_N$ of size t in some r-uniform hypergraph, and let us think of each matching having a different color. How large does N need to be (in terms of t and r) such that we can always find a rainbow matching of...

Feb
13
2023

IAS/Princeton Arithmetic Geometry Seminar

Integrality of the Betti Moduli Space
Johan De Jong
4:30pm|Simonyi Hall 101 and Remote Access

Let X be a smooth projective variety over the complex numbers. Let M be the moduli space of irreducible representations of the topological fundamental group of X of a fixed rank r. Then M is a finite type scheme over the spectrum of the integers Z...

Feb
13
2023

Members' Colloquium

Floer Theories and Reeb Dynamics for Contact Manifolds
2:00pm|Simonyi Hall 101 and Remote Access - see Zoom link below

Contact topology is the study of certain geometric structures on odd dimensional smooth manifolds. A contact structure is a hyperplane field specified by a one form which satisfies a nondegeneracy condition called maximal non-integrability. The...

Feb
13
2023

Computer Science/Discrete Mathematics Seminar I

Efficient Verification of Computation on Untrusted Platforms
Yael Kalai
11:15am|Simonyi 101 and Remote Access

Efficient verification of computation is fundamental to computer science and is at the heart of the P vs. NP question. Recently it has had growing practical significance, especially with the increasing popularity of blockchain technologies and cloud...

Feb
13
2023

Special Joint IAS/Princeton University Symplectic Geometry Seminar

Non-standard Contact Structures on Spheres and Applications
9:45am|Simonyi Hall 101 and Remote Access

In this talk, I will describe the construction of contact structures on higher-dimensional spheres with exotic fillability properties. These can then me implemented on more general manifolds via connected sum, yielding a host of exotic higher...

Feb
10
2023

Joint IAS/PU Number Theory Seminar

Regular de Rham Galois Representations in the Completed Cohomology of Modular Curves
Lue Pan
4:30pm|Princeton University, Fine 214

Let p be a prime. I want to explain how to use the geometry of modular curves at infinite level and the Hodge–Tate period map to study regular de Rham p-adic Galois representations appearing in the p-adically completed cohomology of modular curves...

Feb
10
2023

Probability Seminar

On Crossing Probabilities in Critical Random-Cluster Models
Eveliina Peltola
11:15am|Simonyi 101 and Remote Access

I will discuss exact solvability results (in a sense) for scaling limits of interface crossings in critical random-cluster models in the plane with various general boundary conditions.

The results are rigorous for the FK-Ising model, Bernoulli...

Feb
10
2023

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

Three 20-min Research Talks
David White, Kai Hugtenburg and Patricia Dietzsch
9:15am|Remote Access

David White (North Carolina State University):  Symplectic Instanton Homology of Knots and Links in 3-manifolds

Powerful homology invariants of knots in 3-manifolds have emerged from both the gauge-theoretic and the symplectic kinds of Floer theory...