proposition: Lemma symbm_basis : basis_of fullv symbm.
proof: Proof. Proof using Hd. by rewrite basisEfree symbm_free subvf size_map size_tuple /= dim_homsym. 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