proposition: Lemma meet_YoungE p q : (p `&` q)%O = [seq minn a.1 a.2 | a <- zip p q] :> seq nat.
proof: Proof. by []. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(div ssralg ssrint ssrnum binomial) tools combclass sorted ordtype