proposition: Lemma omegasf_prodsymh la : head 0%N la <= n -> omegasf 'h[la] = 'e[la].
proof: Proof. by move/omegasf_prodsyme => <-; rewrite omegasfK. 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