proposition: Lemma mmeasure_mnm_lt g m : m \in msupp g -> (mf m < mmeasure g)%N.
proof: Proof. move=> km; rewrite mmeasureE (big_fsetD1 m) //=. by rewrite leq_max ltnS leqnn. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq path choice finset fintype finfun) mathcomp(tuple bigop ssralg ssrint ssrnum) xfinmap