proposition: Lemma inj_mnmwiden : injective mnmwiden.
proof: Proof. move=> m1 m2 /mnmP h; apply/mnmP=> i; move: (h (widen i)). by rewrite !mnmwiden_widen. 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