proposition: Lemma comp_Xn_poly p n : 'X^n \Po p = p ^+ n.
proof: Proof. by rewrite /(_ \Po p) map_polyXn hornerXn. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype bigop finset tuple) mathcomp(div ssralg countalg binomial)