proposition: Lemma stablemx0 : stablemx V 0.
proof: Proof. by rewrite mulmx0 sub0mx. 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)