proposition: Lemma leEprod x y : (x <= y) = (x.1 <= y.1) && (x.2 <= y.2).
proof: Proof. by []. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(path fintype tuple bigop finset div prime finfun) mathcomp(finset)