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  1. Home > Articles & Issues >
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  3. Permutations with Ka ...
Conference paper

Permutations with Kazhdan-Lusztig polynomial $ P_id,w(q)=1+q^h$

Alexander Woo ORCID (1) (2)
(1) Department of Mathematics, St. Olaf College, Northfield
(2) Department of Mathematics [Northfield, St. Olaf College]
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Imported on
January 31, 2017
Published on
December 31, 2008
Last modified on
March 31, 2025
Volume
DMTCS Proceedings vol. AK, 21st International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2009)
Proceedings
DOI
10.46298/dmtcs.2705
License
Attribution 4.0 International (CC BY 4.0)
National Science Foundation
0135345
Vertical Integration of Research and Education in the Mathematical Sciences - VIGRE: Research Focus Groups in Mathematics
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1822
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Permutations with Kazhdan-Lusztig polynomial $ P_id,w(q)=1+q^h$

Alexander Woo ORCID (1) (2)
(1) Department of Mathematics, St. Olaf College, Northfield
(2) Department of Mathematics [Northfield, St. Olaf College]
Abstract
English
Using resolutions of singularities introduced by Cortez and a method for calculating Kazhdan-Lusztig polynomials due to Polo, we prove the conjecture of Billey and Braden characterizing permutations w with Kazhdan-Lusztig polynomial$ P_id,w(q)=1+q^h$ for some $h$.
French
On démontre la conjecture de Billey et Braden sur les permutations w pour lesquelles le polynôme de Kazhdan-Lusztig $P_id,w(q)=1+q^h$ pour un entier $h$. On emploie une résolution des singularités présentées par Cortez et une méthode de Polo pour calculer ces polynômes.
Keywords
  • [MATH.MATH-CO]Mathematics [math]/Combinatorics [math.CO]
  • [INFO.INFO-DM]Computer Science [cs]/Discrete Mathematics [cs.DM]
  • Kazhdan-Lusztig polynomials
  • Schubert varieties
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