Sobre los números de Hal y Lah

In this article we study some properties concerning the Hal (H kn ) and Lah numbers(Lkn ), which are those that arise in the theory of combinatorics in association with the‘upward and downward factorial polynomials’ [x]n and [x]n.We establish the corresponding recurrence formulas, the generating fun...

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Main Author: Piza Volio, Eduardo
Format: Artículo
Language: Español
Published: 2015
Online Access: http://revistas.ucr.ac.cr/index.php/matematica/article/view/211
http://hdl.handle.net/10669/12853
Summary: In this article we study some properties concerning the Hal (H kn ) and Lah numbers(Lkn ), which are those that arise in the theory of combinatorics in association with the‘upward and downward factorial polynomials’ [x]n and [x]n.We establish the corresponding recurrence formulas, the generating functions andthe closed formulas for this family of numbers, among others properties.Keywords: Hal numbers, Lah numbers, combinatorics, generating functions.