proposition: Lemma comparable_min_idPr : reflect (min x y = y) (y <= x).
proof: Proof. by apply: (iffP idP); rewrite (rwP eqP) 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)