BIMSA > BIMSA AG Seminar A fibration formula for characteristic classes of constructible étale sheaves
A fibration formula for characteristic classes of constructible étale sheaves
Organizers
Artan Sheshmani , Nan Jun Yang , Bei Hui Yuan
Speaker
Yigeng Zhao
Time
Thursday, October 31, 2024 3:00 PM - 4:00 PM
Venue
A6-101
Online
Zoom 638 227 8222 (BIMSA)
Abstract
For a constructible étale sheaf on a smooth variety, we first review the constructions of cohomological characteristic classes and non-acyclicity classes. We then show that these invariants satisfy a fibration formula, which can be viewed as a generalization of the classical Grothendieck-Ogg-Shafarevich formula. This is joint work with Enlin Yang.