proposition: Lemma polyXY_scale p q : p(X) * q(Y) = q *: p(X).
proof: Proof. by rewrite mulrC mul_mpolyC. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(ssrint rat ssralg ssrnum algC matrix vector) mathcomp(mpoly) tools partition ordtype antisym Schur_mpoly Schur_altdef sympoly homogsym permcent