proposition: Lemma meetEprod 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)