proposition: Lemma lead_coef_comp_poly p q : (size q > 1)%N -> lead_coef (p \Po q) = (lead_coef p) * (lead_coef q) ^+ (size p).-1.
proof: Proof. exact: lead_coef_comp. 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)