proposition: Lemma npoly_vect_axiom : Vector.axiom n npoly.
proof: Proof. by exists npoly_rV; [move=> ???; exact: linearP|exists rVnpoly]. 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)