proposition: Lemma Fchar_is_linear : linear Fchar.
proof: Proof. Proof using. move=> a f g; rewrite !FcharE scaler_sumr -big_split /=. apply eq_bigr => l _; rewrite !cfunElock. by rewrite scalerA mulrA -scalerDl mulrDl. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(fingroup perm morphism gproduct) mathcomp(rat ssralg ssrint ssrnum algC vector archimedean) mathcomp(mxrepresentation classfun character) mathcomp(mpoly) sorted ordtype tools partition antisym sympoly homogsym Cauchy Schur_altdef stdtab therule permcomp cycletype towerSn permcent reprSn unitriginv MurnaghanNakayama