proposition: Lemma map_pinvmx m n (A : 'M_(m, n)) : (pinvmx A)^f = pinvmx A^f.
proof: Proof. rewrite !map_mxM !map_invmx map_row_ebase map_col_ebase. by rewrite map_pid_mx -mxrank_map. 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 finalg zmodp matrix)