proposition: Fact qpoly_scale1l : left_id 1%R qpoly_scale.
proof: Proof. by move=> p; apply/val_eqP; rewrite /= scale1r. 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)