proposition: Lemma map_mxZ a A : (a *: A)^f = f a *: A^f.
proof: Proof. by apply/matrixP=> i j; rewrite !mxE rmorphM. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype finfun bigop finset fingroup perm order) mathcomp(div prime binomial ssralg countalg finalg zmodp)