Birational automorphisms of Severi-Brauer surfaces
Algebraic Geometry
2020-06-24 v3
Abstract
We prove that a finite group acting by birational automorphisms of a non-trivial Severi-Brauer surface over a field of characteristic zero contains a normal abelian subgroup of index at most 3. Also, we find an explicit bound for orders of such finite groups in the case when the base field contains all roots of 1.
Keywords
Cite
@article{arxiv.1907.04364,
title = {Birational automorphisms of Severi-Brauer surfaces},
author = {Constantin Shramov},
journal= {arXiv preprint arXiv:1907.04364},
year = {2020}
}
Comments
13 pages