proposition: Lemma leW_mono : {mono f : x y / x <= y} -> {mono f : x y / x < y}.
proof: Proof. exact: anti_mono. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(path fintype tuple bigop finset div prime finfun) mathcomp(finset)