Behavior of some invariants in characteristic $p$

Shiji Lyu (Princeton)

10-Mar-2023, 20:00-21:00 (14 months ago)

Abstract: There are many numerical invariants of a ring in characteristic $p$ measuring its singularity. In this talk, we will discuss two classical ones, Hilbert-Kunz multiplicity and the $F$-signature, and a rather recent one, the $F$-rational signature. We will discuss several properties of these invariants, including semi-continuity and behavior under smooth extensions.

commutative algebraalgebraic geometry

Audience: researchers in the topic

Stanford algebraic geometry seminar

Series comments: The seminar was online for a significant period of time, but for now is solely in person. More seminar information (including slides and videos, when available):

Organizer: Ravi Vakil*
*contact for this listing

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