proposition: Lemma split4app n4 n3 n2 n1 p1 p2 p3 p4 : split4 n1 n2 n3 n4 (p1 ## p2 ## p3 ## p4) = (p1,p2,p3,p4).
proof: Proof. by rewrite /split4 !split2app. Qed.
imports: Coq(ZArith.ZArith) mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq fintype tuple div zmodp ssralg) ssrextra.nat ssrextra.tuple spec.spec