proposition: Lemma mx_vec_lin A : vec_mx (mxvec A *m lin_mx f) = f A.
proof: Proof. by rewrite mul_rV_lin !mxvecK. 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)