Back to Algebraic Geometry Seminar: Spring 2026
Algebraic Geometry Seminar
Date: Tuesday, Mar 24, 2026
Time: 3:30PM - 4:30PM
Location: LCB 215
@4pm
Zhijia Zang
NYU
Title |
Equivariant unirationality of threefolds |
Abstract |
Let X be a variety carrying a generically free regular action from a group G. We say X is G-unirational if there exists a dominant G-equivariant rational map from a linear G-representation V to X. This notion is closely related to unirationality over non-closed fields and the group cohomology of G. In this talk, I will explain these relations and study G-unirationality on some Fano threefolds and toric threefolds. This is joint work with Yuri Tschinkel and Ivan Cheltsov. |
Algebraic Geometry