proposition: Lemma mmeasure_msupp0 p : (mmeasure p == 0%N) = (msupp p == [::]).
proof: Proof. rewrite mmeasureE; case: (msupp _) => [|m s]. by rewrite big_nil !eqxx. rewrite big_cons /= -[_::_==_]/false; apply/negbTE. by rewrite -lt0n leq_max. 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