proposition: Lemma poly_of_qpolyZ (p : {poly %/ h}) a : a *: p = a *: (p : {poly A}) :> {poly A}.
proof: Proof. by []. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice fintype tuple) mathcomp(bigop binomial finset finfun ssralg countalg finalg poly polydiv) mathcomp(perm fingroup matrix mxalgebra mxpoly vector countalg)