fact: Definition sympolyf_eval : {mpoly R[m]} -> {sympoly R[m]} := mmap (GRing.in_alg {sympoly R[m]}) (fun i : 'I_m => 'e_i.+1).
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