Departmental Colloquium

Event Information Interpolating p-adic cohomology theories
16:00 on Wednesday October 17, 2018
17:00 on Wednesday October 17, 2018
BA6183, Bahen Center, 40 St. George St.
Bhargav Bhatt
http://www-personal.umich.edu/~bhattb/
University of Michigan
https://lsa.umich.edu/math

Integration of differential forms against cycles on a complex manifold helps relate de Rham cohomology to singular cohomology, which forms the beginning of Hodge theory. The analogous story for p-adic manifolds, which is the subject of p-adic Hodge theory, is richer due to a wider variety of available cohomology theories (de Rham, etale, crystalline, and more) and torsion phenomena. In this talk, I will give a bird's eye view of this picture, guided by the recently discovered notion of prismatic cohomology that provides some cohesion to the story.