Arithmetic groups and their boundary and Eisenstein cohomology

Meeting Time & Day

Time: 17:00-18:00, from Jan. 12, 2023

Organizers

Taiwang Deng (BIMSA)

Online

Zoom ID: 293 812 9202

Passcode: BIMSA

Abstract

The study of arithmetic groups  has played a fundamental role in the development of number theory, geometry and representation theory.  Automorphic forms have been one of the most important guiding tools to study them.

The study of Eisenstein cohomology was initiated by Harder, and he discovered that  Eisenstein cohomology is fundamentally related to several important topics in number theory, e.g., special values of $L$-functions, extension of motives, to simply mention a few.  Although lots of work have been done, our understanding of Eisenstein cohomology is still far from complete.

In this 4 lecture course, we will aim to understand the basics of the Eisenstein and boundary cohomology associated to arithmetic groups.

Schedule

Feb. 23, 2023

Title: Arithmetic groups and their boundary and Eisenstein cohomology IV

Speaker: Jitendra Bajpai

Notes

Feb. 2, 2023

Title: Arithmetic groups and their boundary and Eisenstein cohomology III

Speaker: Jitendra Bajpai

Jan. 19, 2023

Title: Arithmetic groups and their boundary and Eisenstein cohomology II

Speaker: Jitendra Bajpai

Jan. 12, 2023

Title: Arithmetic groups and their boundary and Eisenstein cohomology I

Speaker: Jitendra Bajpa