proposition: Lemma mmap11 h : mmap1 h 0%MM = 1.
proof: Proof. by rewrite /mmap1 big1 // => /= i _; rewrite mnm0E expr0. 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