Previous Conferences & Workshops

Mar
12
2024

Special Year Workshop on p-adic Arithmetic Geometry

Characteristic Classes of Étale Local Systems
12:00pm|Wolfensohn Hall

Abstract: Given an étale Zp-local system of rank n on an algebraic variety X, continuous cohomology classes of the group GLn(Zp) give rise to classes in (absolute) étale cohomology of the variety with coefficients in Qp. These characteristic classes...

Mar
12
2024

Computer Science/Discrete Mathematics Seminar II

The Structure of Translational Tilings in Z^d
10:30am|Simonyi Hall 101 and Remote Access

A finite set $F$ in $\mathbb{Z}^d$ is a translational tile of  $\mathbb{Z}^d$ if one can cover  $\mathbb{Z}^d$ by translated copies of $F$ without any overlaps, i.e., there exists a translational tiling of $\mathbb{Z}^d$ by $F$.  Suppose that $F$ is...

Mar
12
2024

Special Year Workshop on p-adic Arithmetic Geometry

On the K-theory of Z/p^n
Achim Krause
10:00am|Wolfensohn Hall

Abstract: In recent work with Antieau and Nikolaus we use prismatic cohomology to compute algebraic K-theory of Z/pn and similar rings. Our approach is based on a new description of absolute prismatic cohomology, which can be made completely...

Mar
11
2024

Special Year Workshop on p-adic Arithmetic Geometry

Igusa Stacks and Local-Global Compatibility
Mingjia Zhang
4:30pm|Wolfensohn Hall

Abstract: Recently the work of Fargues--Scholze provides a geometrization of the local Langlands conjecture. It is natural to ask if in this context any form of local-global compatibility can be stated/verified. We discuss some expectations and...

Mar
11
2024

Special Year Workshop on p-adic Arithmetic Geometry

p-adic Non-Abelian Hodge Theory via Moduli Stacks
Ben Heuer
2:30pm|Wolfensohn Hall

Abstract: The p-adic Simpson correspondence aims to give a non-abelian generalisation of the Hodge-Tate decomposition. Following an idea of Faltings, it should relate pro-étale vector bundles on smooth rigid spaces over Cp to Higgs bundles. In this...

Mar
11
2024

Symplectic Geometry Seminar

Relative Calabi-Yau Structures for Legendrian Contact Homology
Joshua Sabloff
12:30pm|Rubenstein Commons | Meeting Room 5

Legendrian Contact Homology (LCH) was among the first, and is still among the most important, non-classical invariants of Legendrian knots. In this talk, I will tell a story that builds up ever more sophisticated analogues of Poincare Duality in LCH...

Mar
11
2024

Special Year Workshop on p-adic Arithmetic Geometry

Singularities in Mixed Characteristic via Alterations
Karl Schwede
12:00pm|Wolfensohn Hall

Abstract: Multiplier ideals and test ideals are ways to measure singularities in characteristic zero and p > 0 respectively.  In characteristic zero, multiplier ideals are computed by a sufficiently large blowup by comparing the canonical module of...

Mar
11
2024

Computer Science/Discrete Mathematics Seminar I

Sparsification of Gaussian Processes
Anindya De
11:00am|Simonyi 101 and Remote Access

In this talk, we will show that the supremum of any centered Gaussian process can be approximated to any arbitrary accuracy by a finite dimensional Gaussian process where the dimension of the approximator is just dependent on the target error. As a...

Mar
11
2024

Special Year Workshop on p-adic Arithmetic Geometry

Revisiting the Motivic Cohomology of Schemes
Matthew Morrow
10:00am|Wolfensohn Hall

Abstract: Since the original conjectures of Beilinson and Lichtenbaum in the 80s, several versions of motivic cohomology have been introduced and developed, notably by Voevodsky. Most classically, Bloch's higher Chow groups provide the accepted...

Mar
11
2024

Workshop on p-adic Arithmetic Geometry (Spring)

10:00am|Wolfensohn Hall

Sponsored by Dr. John P. Hempel and Simons Foundation

Organizers: Bhargav Bhatt (IAS/Princeton/Michigan), Johan DeJong (Columbia/IAS), Jacob Lurie (IAS)

Invited Speakers:
Kestutis Cesnavicius, Université Paris-Saclay/IAS
Pierre Colmez, IMJ-PRG/IAS
Lars...