proposition: Lemma horner_to_alg_creal p x : ((p ^ to_alg F).[to_alg_creal x] == to_alg_creal p.[x])%CR.
proof: Proof. by apply: eq_crealP; exists m0=> * /=; rewrite horner_map subrr normr0. Qed.
imports: HB(structures) mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq choice fintype) mathcomp(bigop order ssralg ssrnum ssrint rat poly polydiv polyorder) mathcomp(perm matrix mxpoly polyXY binomial generic_quotient) mathcomp(cauchyreals separable zmodp bigenough)