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DM
1998
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13 years 4 months ago
Kazhdan-Lusztig polynomials for certain varieties of incomplete flags
Abstract. We give explicit formulas for the Kazhdan-Lusztig P- and Rpolynomials for permutations coming from the variety F1,n−1 of incomplete flags consisting of a line and a hy...
Boris Shapiro, Michael Shapiro, Alek Vainshtein
JCT
2008
70views more  JCT 2008»
13 years 4 months ago
Bruhat order, smooth Schubert varieties, and hyperplane arrangements
The aim of this article is to link Schubert varieties in the flag manifold with hyperplane arrangements. For a permutation, we construct a certain graphical hyperplane arrangement....
Suho Oh, Alexander Postnikov, Hwanchul Yoo