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  1. Home > Articles & Issues >
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  3. Statistics on Lattic ...
Conference paper

Statistics on Lattice Walks and q-Lassalle Numbers

Lenny Tevlin (1)
(1) Liberal Studies, New York University
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Imported on
November 21, 2016
Published on
December 31, 2014
Last modified on
March 31, 2025
Volume
DMTCS Proceedings, 27th International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2015)
Proceedings
DOI
10.46298/dmtcs.2528
License
Attribution 4.0 International (CC BY 4.0)
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Statistics on Lattice Walks and q-Lassalle Numbers

Lenny Tevlin (1)
(1) Liberal Studies, New York University
Abstract
English
This paper contains two results. First, I propose a $q$-generalization of a certain sequence of positive integers, related to Catalan numbers, introduced by Zeilberger, see Lassalle (2010). These $q$-integers are palindromic polynomials in $q$ with positive integer coefficients. The positivity depends on the positivity of a certain difference of products of $q$-binomial coefficients.To this end, I introduce a new inversion/major statistics on lattice walks. The difference in $q$-binomial coefficients is then seen as a generating function of weighted walks that remain in the upper half-plan.
French
Cet document contient deux résultats. Tout d’abord, je vous propose un $q$-generalization d’une certaine séquence de nombres entiers positifs, liés à nombres de Catalan, introduites par Zeilberger (Lassalle, 2010). Ces $q$-integers sont des polynômes palindromiques à $q$ à coefficients entiers positifs. La positivité dépend de la positivité d’une certaine différence de produits de $q$-coefficients binomial.Pour ce faire, je vous présente une nouvelle inversion/major index sur les chemins du réseau. La différence de $q$-binomial coefficients est alors considérée comme une fonction de génération de trajets pondérés qui restent dans le demi-plan supérieur.
Keywords
  • [INFO.INFO-DM]Computer Science [cs]/Discrete Mathematics [cs.DM]
  • lattice walks
  • statistics on words
  • $q$-integers
Cited by

Source: OpenCitations

  • Stack-sorting, set partitions, and Lassalle's sequence

    arXiv (Cornell University)

    Authors : Colin Defant ORCID, Michael Engen, Jordan A. Miller ORCID

    Journal reference : Volume 175, 2020, pp. 105275

    DOI : 10.1016/j.jcta.2020.105275
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