proposition: Lemma coord_symbh la mu : coord 'hh (enum_rank mu) 'hh[la] = (la == mu)%:R.
proof: Proof. by rewrite -symbhE coord_free ?er_eqE; last exact: symbh_free. 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