Organizers (alphabetical order):

Baiting Xie xbt23"at"mails.tsinghua.edu.cn
Zhiwei Zheng zhengzw11"at"163.com
Jie Zhou jzhou2018"at"mail.tsinghua.edu.cn

All seminars will be held in B541, Shuangqing Complex Building on Wednesday at 10:00-12:00.

Date Speaker Title Abstract Files
2026-03-11 Baiting Xie Topology and Combinatorics of Complex Hyperplane Arrangement Complements In this talk, I will introduce which topological invariants of hyperplane arrangement complements are combinatorially determined. I will briefly sketch the proof of the classical result by Orlik and Solomon on the integral cohomology, and present some conjectures and recent progress on cohomology with local coefficients.
2026-03-18 Jie Fu Smooth Hypersurface with Automorphism Group of Large Order This talk will discuss Yang-Yu-Zhu and Esser-Li’s independent work determining the smooth hypersurface with automorphism group with given dimension and degree. I will also introduce a few classical results on finite subgroups of the general linear group and the theory of regular addictive decomposition, which provides a little simplification for some steps in these works. Some further problems will be discussed ed as well.