Abstract: Z. Reichstein and N. Vonessen, "Tame group actions..."

Zinovy Reichstein and Nikolaus Vonessen, Tame group actions on central simple algebras, J. Algebra 318 (2007), 1039-1056.

Abstract:

We study actions of linear algebraic groups on finite-dimensional central simple algebras. We describe the fixed algebra for a broad class of such actions.