Andersen Filtration and Hard Lefschetz
表示论
2009-03-18 v3
摘要
On the space of homomorphisms from a Verma module to an indecomposable tilting module of the BGG-category O we define a natural filtration following Andersen and establish a formula expressing the dimensions of the filtration steps in terms of coefficients of Kazhdan-Lusztig polynomials.
引用
@article{arxiv.math/0604590,
title = {Andersen Filtration and Hard Lefschetz},
author = {Wolfgang Soergel},
journal= {arXiv preprint arXiv:math/0604590},
year = {2009}
}
备注
English version of math.RT/0604589, v3 revised translation