proposition: Lemma comparable_maxEge x y : x >=< y -> max x y = if x >= y then x else y.
proof: Proof. by case: comparableP. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(path fintype tuple bigop finset div prime finfun) mathcomp(finset)