Compression of Finite Group Actions and Covariant Dimension, II

Hanspeter Kraft, Roland Lötscher, Gerald W. Schwarz

Let $G$ be a finite group and $\varphi :V\to W$ an equivariant morphism of finite dimensional $G$-modules. We say that $\varphi$ is faithful if $G$ acts faithfully on $\varphi (V)$. The covariant dim…