proposition: Lemma Stern_gt0 n: 0 < Stern n.+1.
proof: Proof. by apply:divr_gt0; rewrite ltr0n fusc_gt0. 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)