proposition: Lemma lead_coefDr p q : (size q > size p)%N -> lead_coef (p + q) = lead_coef q.
proof: Proof. exact: lead_coefDr. Qed.
imports: mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq choice fintype) mathcomp(bigop order ssralg poly polydiv ssrnum zmodp) mathcomp(polyorder path interval ssrint)