Etale representations for reductive algebraic groups with factors $S{p}_n$ or $S{O}_n$

Dietrich Burde, Wolfgang Globke, Andrei Minchenko

A complex vector space $V$ is an étale $G$-module if $G$ acts rationally on $V$ with a Zariski-open orbit and $\dim G=\dim V$. Such a module is called super-étale if the stabilizer…