proposition: Lemma fusciL_0 a b: FusciL nil a b = b.
proof: Proof. by rewrite /FusciL/= fusci_0. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq choice fintype order bigop ssralg) mathcomp(div ssrnum ssrint rat prime path binomial) mathcomp(tuple finset) gaia(fibm)