Graded decomposition matrices of v-Schur algebras via Jantzen filtration
arXiv:1006.1545
Abstract
We prove that certain parabolic Kazhdan-Lusztig polynomials calculate the graded decomposition matrices of v-Schur algebras given by the Jantzen filtration of Weyl modules, confirming a conjecture of Leclerc and Thibon.
53 pages