proposition: Lemma map_mx_inv n' (A : 'M_n'.+1) : A^-1^f = A^f^-1.
proof: Proof. exact: map_invmx. 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)