proposition: Fact cnvarsym_is_linear : linear cnvarsym.
proof: Proof. by move=> r /= u v; apply val_inj; rewrite /= !linearP. 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