Parabolic Kazhdan-Lusztig polynomials and Schubert varieties
arXiv:math/9908153
Abstract
We shall give a description of the intersection cohomology groups of the Schubert varieties in partial flag manifolds over symmetrizable Kac-Moody Lie algebras in terms of parabolic Kazhdan-Lusztig polynomials introduced by Deodhar.
21 pages