Algebraic Geometry Seminar, UC Davis

Sebastian Torres, University of Massachusetts

Bott vanishing using GIT and quantization

Organizer's time: 2021-05-11 11:00 America/Los_Angeles

To access, you need a secret. Please sign in.

A smooth projective variety is said to satisfy Bott vanishing if $\Omega^j\otimes L$ has no higher cohomology for every $j$ and every ample line bundle $L$. This is a very restrictive property, and there are few non-toric examples known to satisfy it. I will present a new class of examples obtained as smooth GIT quotients of $(\mathbb{P}^1)^n$. For this, I will need to use the work by Teleman and Halpern-Leistner about the derived category of a GIT quotient, and explain how this allows us, in some cases, to compute cohomologies directly in an ambient quotient stack.

Notes

Submitted by: Eugene Gorsky