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A fibration formula for characteristic classes of constructible étale sheaves

组织者

阿尔坦·谢什马尼 , 杨南君 , 袁北彗

演讲者

Yigeng Zhao

时间

2024年10月31日 15:00 至 16:00

地点

A6-101

线上

Zoom 638 227 8222 (BIMSA)

摘要

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.