proposition: Lemma fib_content_large m: m.+1 - fib (fib_content m).+2 <= m.
proof: Proof. by rewrite fib_pos subSS leq_subr. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq path fintype div bigop binomial) mathcomp(prime finset ssralg ssrnum ssrint)