Previous Special Year Seminar

Oct
25
2023

Special Year Seminar

$p$-adic Hodge Theory and Simpson’s Correspondence
2:00pm|Simonyi 101 and Remote Access

This talk will introduce background, achievements and challenges in the quest to find non-Archimedean versions of the celebrated Corlette-Simpson correspondence, which on Kähler manifolds relates representations of the fundamental group to certain...

Oct
18
2023

Special Year Seminar

Test Ideals in Mixed Characteristic via the $p$-adic Riemann-Hilbert Correspondence
2:00pm|Simonyi 101 and Remote Access

Multiplier ideals in characteristic zero and test ideals in positive characteristic are fundamental objects in the study of commutative algebra and birational geometry in equal characteristic.  We introduced a mixed characteristic version of the...

Oct
11
2023

Special Year Seminar

Prismatic F-gauges and Fontaine-Laffaille Modules
Vadim Vologodsky
2:00pm|Simonyi 101 and Remote Access

With every bounded prism Bhatt and Scholze associated a cohomology theory of formal p-adic schemes. The prismatic cohomology comes equipped with the Nygaard filtration and the Frobenius endomorphism. The Bhatt-Scholze construction has been advanced...

Sep
21
2023

Special Year Seminar

Organizational Meeting
10:00am|Simonyi 101 and Remote Access

This is the organizational meeting for a learning seminar during the fall term on topics related to non-abelian p-adic Hodge theory. 

May
30
2023

Special Year Research Seminar

Measure Doubling for Small Sets in SO(3,R)
Yifan Jing
2:00pm|Simonyi 101 and Remote Access

Let SO(3,R) be the 3D-rotation group equipped with the real-manifold topology and the normalized Haar measure \mu. Confirming a conjecture by Breuillard and Green, we show that if A is an open subset of SO(3,R) with sufficiently small measure, then...

May
16
2023

Special Year Research Seminar

Around Gauss Circle Problem: Hardy's Conjecture and the Distribution of Lattice Points Near Circles
Igor Wigman
2:00pm|Simonyi 101 and Remote Access

This talk is based on a joint work with Steve Lester.

We review the Gauss circle problem, and Hardy's conjecture regarding the order of magnitude of the remainder term. It is attempted to rigorously formulate the folklore heuristics behind Hardy's...

May
09
2023

Special Year Research Seminar

Uniform Sets with Few Progressions via Colorings
Yufei Zhao
2:00pm|Simonyi 101 and Remote Access

Ruzsa asked whether there exist Fourier-uniform subsets of $\mathbb{Z}/N\mathbb{Z}$ with very few 4-term arithmetic progressions (4-AP). The standard pedagogical example of a Fourier uniform set with a "wrong" density of 4-APs actually has 4-AP...