proposition: Lemma conj0mx (m n : nat) f : conjmx (0 : 'M[F]_(m, n)) f = 0.
proof: Proof. by rewrite /conjmx !mul0mx. 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)