fact: Definition monsY (mz : 'X_{1.. m*n}) := [tuple [multinom mz (mxvec_index i j) | j < n] | i < m].
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(ssrint rat ssralg ssrnum algC matrix vector) mathcomp(mpoly) tools partition ordtype antisym Schur_mpoly Schur_altdef sympoly homogsym permcent