proposition: Lemma mmeasureZ c p mf : c != 0 -> mmeasure mf (c *: p) = mmeasure mf p.
proof: Proof. by move=> nz_c; rewrite !mmeasureE; apply/perm_big/msuppZ. 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