Some Identities Involving Derangement Polynomials and Numbers and Moments of Gamma Random Variables

The problem of counting derangements was initiated by Pierre Rémond de Montmort in 1708. A derangement is a permutation that has no fixed points, and the derangement number Dn is the number of fixed point free permutations on an n element set. Furthermore, the derangement polynomials are natural ext...

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Main Authors: Lee-Chae Jang, Dae San Kim, Taekyun Kim, Hyunseok Lee
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Journal of Function Spaces
Online Access:http://dx.doi.org/10.1155/2020/6624006
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author Lee-Chae Jang
Dae San Kim
Taekyun Kim
Hyunseok Lee
author_facet Lee-Chae Jang
Dae San Kim
Taekyun Kim
Hyunseok Lee
author_sort Lee-Chae Jang
collection DOAJ
description The problem of counting derangements was initiated by Pierre Rémond de Montmort in 1708. A derangement is a permutation that has no fixed points, and the derangement number Dn is the number of fixed point free permutations on an n element set. Furthermore, the derangement polynomials are natural extensions of the derangement numbers. In this paper, we study the derangement polynomials and numbers, their connections with cosine-derangement polynomials and sine-derangement polynomials, and their applications to moments of some variants of gamma random variables.
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series Journal of Function Spaces
spelling doaj-art-adcd9b8d0fad49f7809fb581457f98fb2025-02-03T06:45:52ZengWileyJournal of Function Spaces2314-88962314-88882020-01-01202010.1155/2020/66240066624006Some Identities Involving Derangement Polynomials and Numbers and Moments of Gamma Random VariablesLee-Chae Jang0Dae San Kim1Taekyun Kim2Hyunseok Lee3Graduate School of Education, Konkuk University, Seoul 143-701, Republic of KoreaDepartment of Mathematics, Sogang University, Seoul 121-742, Republic of KoreaDepartment of Mathematics, Kwangwoon University, Seoul 139-701, Republic of KoreaDepartment of Mathematics, Kwangwoon University, Seoul 139-701, Republic of KoreaThe problem of counting derangements was initiated by Pierre Rémond de Montmort in 1708. A derangement is a permutation that has no fixed points, and the derangement number Dn is the number of fixed point free permutations on an n element set. Furthermore, the derangement polynomials are natural extensions of the derangement numbers. In this paper, we study the derangement polynomials and numbers, their connections with cosine-derangement polynomials and sine-derangement polynomials, and their applications to moments of some variants of gamma random variables.http://dx.doi.org/10.1155/2020/6624006
spellingShingle Lee-Chae Jang
Dae San Kim
Taekyun Kim
Hyunseok Lee
Some Identities Involving Derangement Polynomials and Numbers and Moments of Gamma Random Variables
Journal of Function Spaces
title Some Identities Involving Derangement Polynomials and Numbers and Moments of Gamma Random Variables
title_full Some Identities Involving Derangement Polynomials and Numbers and Moments of Gamma Random Variables
title_fullStr Some Identities Involving Derangement Polynomials and Numbers and Moments of Gamma Random Variables
title_full_unstemmed Some Identities Involving Derangement Polynomials and Numbers and Moments of Gamma Random Variables
title_short Some Identities Involving Derangement Polynomials and Numbers and Moments of Gamma Random Variables
title_sort some identities involving derangement polynomials and numbers and moments of gamma random variables
url http://dx.doi.org/10.1155/2020/6624006
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AT daesankim someidentitiesinvolvingderangementpolynomialsandnumbersandmomentsofgammarandomvariables
AT taekyunkim someidentitiesinvolvingderangementpolynomialsandnumbersandmomentsofgammarandomvariables
AT hyunseoklee someidentitiesinvolvingderangementpolynomialsandnumbersandmomentsofgammarandomvariables