proposition: Lemma homsymprodMnl p q m : (q *+ m) *h p = q *h p *+ m.
proof: Proof. by rewrite -!homsymprodrE linearMn. 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