The decomposition of 0-Hecke modules associated to quasisymmetric Schur functions
arXiv:1711.08737 · doi:10.5802/alco.58
Abstract
Recently Tewari and van Willigenburg constructed modules of the 0-Hecke algebra that are mapped to the quasisymmetric Schur functions by the quasisymmetric characteristic and decomposed them into a direct sum of certain submodules. We show that these submodules are indecomposable by determining their endomorphism rings.
16 pages, 2 figures