proposition: Lemma split_stern01_left n : take ((2^n).+1) (stern01 n.+1) = stern01 n.
proof: Proof. by rewrite split_sternD_left add0n. 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)