SMS scnews item created by Catherine Meister at Mon 19 Jan 2026 1601
Type: Seminar
Distribution: World
Expiry: 16 Feb 2026
Calendar1: 22 Jan 2026 1300-1400
CalLoc1: SMRI Seminar Room (A12 Macleay Room 301)
Auth: cmeister@159-196-153-133.9fc499.syd.nbn.aussiebb.net (cmei0631) in SMS-SAML

SMRI Seminar: Hansen

Cohomology of p-adic period domains

David Hansen, National University of Singapore

SMRI Seminar, Thursday 22nd January 2026, 1 pm – 2 pm, SMRI Seminar Room (A12 Macleay Room 301)

Abstract: Since the pioneering work of Drinfeld, p-adic period domains have been a driving force behind many developments in nonarchimedean geometry. However, despite many advances, the basic question of computing their cohomology has remained completely open outside of a few very special cases treated by Drinfeld and Schneider-Stuhler over 30 years ago. In this talk I will present a general formula for the cohomology of these spaces. This formula is elementary, and it has several unusual features which suggest some very rich phenomenology. I will explain this formula and where it comes from, present several examples, and take the first steps towards unraveling the patterns this formula is hiding.

For seminar updates, see our What's On Calendar. Please join us after the seminar for the SMRI afternoon tea, every Thursday at 2 pm on the SMRI Terrace.

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