proposition: Lemma mulVr : {in uam, left_inverse 1 vam *%R}.
proof: Proof. by move=> u Uu; rewrite /= Uu -amE lker0_lfunVK. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq path) mathcomp(choice fintype div tuple finfun bigop ssralg) mathcomp(finalg zmodp matrix vector poly)