proposition: Lemma syme_to_symh d : 'e_d = \sum_(la : 'P_d) (-1) ^+ (d - size la) * (perm_partn la)%:R *: 'h[la] :> SF.
proof: Proof. by apply: (symHE_intpartn (syme0 _ _) (symh0 _ _)); exact: sum_symh_syme. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(ssralg ssrint fingroup perm) mathcomp(ssrcomplements freeg mpoly) sorted tools ordtype permuted partition skewpart composition Yamanouchi std tableau stdtab skewtab permcent antisym Schur_mpoly therule Schur_altdef unitriginv