proposition: Lemma submK m m' : (m <= m')%MM -> (m' - m + m = m')%MM.
proof: Proof. by move/mnm_lepP=> h; apply/mnmP=> i; rewrite !mnmE subnK. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq path) mathcomp(choice fintype tuple finfun bigop finset binomial) mathcomp(order fingroup perm ssralg zmodp poly ssrint) mathcomp(matrix vector) mathcomp(bigenough) ssrcomplements freeg