proposition: Fact homsymprod_subproof (p : {homsym R[n, c]}) (q : {homsym R[n, d]}) : homsym p * homsym q \is (c + d).-homsym.
proof: Proof. by apply: dhomogM => /=; apply: homsym_is_dhomog. 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