proposition: Lemma Zeckp_0: Zeckp 0 = 0.
proof: Proof. by rewrite /Zeckp Zeck_0 /Zeck_valp big_nil. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq path fintype div bigop binomial) mathcomp(prime finset ssralg ssrnum ssrint)