proposition: Lemma homsymprodMnr p q m : p *h (q *+ m) = (p *h q) *+ m.
proof: Proof. exact: raddfMn. 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