proposition: Lemma map_char_poly : fp (char_poly A) = char_poly A^f.
proof: Proof. by rewrite -det_map_mx map_char_poly_mx. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(div fintype tuple finfun bigop fingroup perm) mathcomp(ssralg zmodp matrix mxalgebra poly polydiv)