proposition: Lemma lead_coef_map_eq p : f (lead_coef p) != 0 -> lead_coef p^f = f (lead_coef p).
proof: Proof. exact: lead_coef_map_id0 (raddf0 f). Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype bigop finset tuple) mathcomp(div ssralg countalg binomial)