Degenrate Eulerian numbers and polynomials
Taekyun Kim, Dae san kim

TL;DR
This paper explores the properties of degenerate Eulerian numbers and polynomials, deriving new identities and expanding understanding of their mathematical structure and relationships with other special numbers.
Contribution
It introduces new identities involving degenerate Eulerian polynomials and numbers, enhancing the theoretical framework of these mathematical objects.
Findings
Derived new identities for degenerate Eulerian numbers and polynomials
Connected degenerate Eulerian numbers with other special numbers
Expanded the theoretical understanding of degenerate Eulerian structures
Abstract
In this paper, we study the degenerate Eulerian polynomials and numbers and give some new and interesting identities associated with several special numbers and polynomials.
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Taxonomy
TopicsAdvanced Mathematical Identities · Advanced Mathematical Theories · Advanced Mathematical Theories and Applications
Degenerate Eulerian numbers and polynomials
Taekyun Kim
Department of Mathematics, Kwangwoon University, Seoul 139-701, Republic of Korea
and
Dae San Kim
Department of Mathematics, Sogang University, Seoul 121-742, Republic of Korea
Abstract.
In this paper, we study the degenerate Eulerian polynomials and numbers and give some new and interesting identities associated with several special numbers and polynomials.
Key words and phrases:
Degenerate Eulerian numbers and polynomials
2010 Mathematics Subject Classification:
11B83; 11S80
1. Introduction
In combinatorics, the Eulerian number , is the number of permutations of the numbers 1 to in which exactly elements are greater than the previous element.
Indeed, the generating function of Eulerian numbers is given by
[TABLE]
Thus, by (1.1), we get
[TABLE]
From (1.2), we note that
[TABLE]
[TABLE]
By (LABEL:03), we obtain the recurrence relation for Eulerian numbers as follows:
[TABLE]
As is well known, the Eulerian polynomials, , , are defined by the generating function
[TABLE]
with the usual convention about replacing by . From (1.4), we note that
[TABLE]
where is the Kronecker’s symbol (see [7]). From (LABEL:03), (1.4), (1.5) and (1.6), we note that
[TABLE]
The first few Eulerian polynomials are given by
[TABLE]
The Worpitzky’s identity expresses as the linear combination of Eulerian numbers with binomial coefficients as follows:
[TABLE]
From (1.6), we note that
[TABLE]
and
[TABLE]
where and (see [7,10]).
In [6], the degenerate ordered Bell polynomials are defined by the generating function
[TABLE]
When , are called the degenerate ordered Bell numbers. It is well known that the Frobenius-Euler polynomials are given by the generating function
[TABLE]
where . (see [8]). When , are called the Frobenius-Euler numbers. Recently, several authors have studied some interesting extensions and modifications of Eulerian polynomials and numbers (see [1-12]).
In this paper, we study the degenerate Eulerian polynomials and numbers, which are due to Carlitz (see [1]), and give some new and interesting identities for these numbers and polynomials associated with several special numbers and polynomials.
2. Degenerate Eulerian polynomials and numbers
We recall that the Stirling numbers of the first kind and of the second kind are defined by the generating function as follows:
[TABLE]
and
[TABLE]
For , we consider the degenerate Eulerian polynomials given by the generating function
[TABLE]
Note that , . From (2.3), we have
[TABLE]
where , , .
Comparing the coefficients on both sides of (2.4), we get
[TABLE]
Thus, from (2.5), we have
[TABLE]
For , we have
[TABLE]
From (2.3), we note that
[TABLE]
Thus, by comparing the coefficients on both sides of (2.8), we get
[TABLE]
In view of (1.7), we define the degenerate Eulerian polynomials by
[TABLE]
Thus, we easily get , . From (1.7), (2.9) and (2.10), we have
[TABLE]
Comparing the coefficients on both sides of (2.11), we obtain
[TABLE]
[TABLE]
Thus, by (2.11), we have
[TABLE]
where . For , we have
[TABLE]
Note that
[TABLE]
From (2.8), we can derive the following equation:
[TABLE]
where is the Frobenius-Euler numbers. By (2.16), we get
[TABLE]
Let us take . Then we have
[TABLE]
3. Further remark
Let be an odd prime number. Throughout this section, , and will denote the ring of -adic integers, the field of -adic rational numbers and the completion of the algebraic closure of , respectively. The -adic norm is normalized so that . Let be an indeterminate in such that . As notations, the -numbers are defined by
[TABLE]
Let be a continuous function on . Then the fermionic -adic -integral on is defined as
[TABLE]
From (3.1), we note that
[TABLE]
By (3.2), we get
[TABLE]
where and . Thus, from (3.3), we have
[TABLE]
From (2.3) and (3.4), we note that
[TABLE]
Now, we define the degenerate rising factorials as follows:
[TABLE]
It is not difficult to show that
[TABLE]
From (3.2), we note that
[TABLE]
Thus, by (3.8), we get
[TABLE]
where are the Frobenius-Euler numbers. From (3.7) and (3.8), we have
[TABLE]
Comparing the coefficients on both sides of (3.5) and (3.9), we have
[TABLE]
In particular,
[TABLE]
From (3.11), we note that
[TABLE]
Thus, by comparing the coefficients on the both sides of (3.12), we get
[TABLE]
For any positive real number , the degenerate unsigned Stirling numbers of the first kind are defined by
[TABLE]
From (3.14), we have
[TABLE]
Hence, by (3.13) and (3.15), we get
[TABLE]
The reference list from the paper itself. Each links out to its DOI / PubMed record.
- 11. L. Carlitz, Degenerate Stirling, Bernoulli and Eulerian numbers, Utilitas Math. 15 (1979), 51–88.
- 22. L. Comtet, Advanced Combinatorics: The Art of Finite and Infinite Expansions, D. Reidel Publishing Co., 1974 , p. 228.
- 33. D. S. Kim, T. Kim, W. J. Kim, D. V. Dolgy, A note on Eulerian polynomials, Abstr. Appl. Anal. 2012 , Art. ID 269640, 10 pp.
- 44. D. S. Kim, T. Kim, Y.-H. Kim, D. V. Dolgy, A note on Euler polynomials associated with Bernoulli and Euler numbers and polynomials, Adv. Stud. Contemp. Math. (Kyungshang) 22 (2012), no. 3, 379-389.
- 55. D. S. Kim, T. Kim, S.-H. Rim, Frobenius-type Eulerian polynomials and umbral calculus, Proc. Jangjeon Math. Soc., 16 (2013), no. 2, 285-292.
- 66. T. Kim, Degenerate ordered Bell numbers and polynomials, Proc. Jangjeon Math. Soc., 20 (2017), no. 2, (in press),
- 77. T. Kim, D. S. Kim, Some identities of Eulerian polynomials arising from nonlinear differential equations, Iran. J. Sci. Technol. Trans. Sci. (2016) . doi:10.1007/s 40995-016-0073-0.
- 88. T. Kim, T. Mansour, Umbral calculus associated with Frobenius-type Eulerian polynomials, Russ. J. Math. Phys. 21 (2014), no. 4, 484-493.
