3 papers
math.AG2023
Equivariant geometry of the Segre cubic and the Burkhardt quartic
Ivan Cheltsov, Yuri Tschinkel, Zhijia Zhang
We study linearizability and stable linearizability of actions of finite groups on the Segre cubic and Burkhardt quartic, using techniques from group cohomology, birational rigidit…
math.AG2023
Equivariant birational geometry of linear actions
Yuri Tschinkel, Kaiqi Yang, Zhijia Zhang
We study linear actions of finite groups in small dimensions, up to equivariant birationality.
math.AG2021
Combinatorial Burnside groups
Yuri Tschinkel, Kaiqi Yang, Zhijia Zhang
We study the structure of combinatorial Burnside groups, which receive equivariant birational invariants of actions of finite groups on algebraic varieties.