proposition: Lemma homsymprodZr a p q : p *h (a *: q) = a *: (p *h q).
proof: Proof. by rewrite linearZ. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(ssralg matrix vector ssrnum algC archimedean) mathcomp(fingroup perm) mathcomp(ssrcomplements freeg mpoly) tools sorted ordtype permuted partition permcent antisym Schur_mpoly Schur_altdef sympoly