Northwestern Events Calendar
Sep
26
2025

p-adic geometry, beyond perfectoid spaces

When: Friday, September 26, 2025
1:00 PM - 2:00 PM CT

Where: Annenberg Hall, G31, 2120 Campus Drive, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Post Docs/Docs - Graduate Students

Contact: Bao Le Hung   (847) 491-5563
lhvietbao@math.northwestern.edu

Group: Department of Mathematics: Number Theory Seminar

Category: Lectures & Meetings, Academic

Description:

p-adic analytic spaces have, from the perspective of étale cohomology, a more complicated local structure than complex analytic spaces. Things improve after one extracts a lot of pth power roots. This led to the theory of perfectoid spaces and diamonds, a very powerful language to analyze « topological » properties of rigid analytic spaces. However, recent developements in (non-abelian) p-adic Hodge theory and in the geometrization of the Langlands program, which I will briefly review, call for a formalism also able to retain some « differential » information about these spaces. I will explain a possible framework for doing this and highlight some applications. Based on joint work with Anschütz, Bosco, Rodriguez Camargo and Scholze.

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