proposition: Theorem Fchar_inv_isometry p q : '[Fchar_inv p, Fchar_inv q] = '[p | q].
proof: Proof. Proof using Hn. by rewrite -Fchar_isometry !Fchar_invK. 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