2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/71687The purpose of this paper is to give an explicit description of the irreducible decomposition of the multigraded S_n-module of coinvariants of S_n x S_n. Many of the results presented can be extended to analogous questions for other finite reflection group.23 pages, 7 figuresCombinatoricsRepresentation Theory05E10, 05E05Decomposition of the Diagonal Action of S_n on the Coinvariant Space of S_n x S_ntext