proposition: Lemma eq_minr x y : (min x y == y) = (y <= x).
proof: Proof. exact: comparable_eq_minr. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(path fintype tuple bigop finset div prime finfun) mathcomp(finset)