proposition: Lemma polyCMn n : {morph (@polyC R) : c / c *+ n}.
proof: Proof. exact: raddfMn. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype bigop finset tuple) mathcomp(div ssralg countalg binomial)