• 제목/요약/키워드: Special functions

검색결과 847건 처리시간 0.027초

SOME EVALUATIONS OF INFINITE SERIES INVOLVING DIRICHLET TYPE PARAMETRIC HARMONIC NUMBERS

  • Hongyuan Rui;Ce Xu;Xiaobin Yin
    • 대한수학회보
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    • 제61권3호
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    • pp.671-697
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    • 2024
  • In this paper, we formally introduce the notion of a general parametric digamma function Ψ(−s; A, a) and we find the Laurent expansion of Ψ(−s; A, a) at the integers and poles. Considering the contour integrations involving Ψ(−s; A, a), we present some new identities for infinite series involving Dirichlet type parametric harmonic numbers by using the method of residue computation. Then applying these formulas obtained, we establish some explicit relations of parametric linear Euler sums and some special functions (e.g. trigonometric functions, digamma functions, Hurwitz zeta functions etc.). Moreover, some illustrative special cases as well as immediate consequences of the main results are also considered.

CERTAIN NEW INTEGRAL FORMULAS INVOLVING THE GENERALIZED BESSEL FUNCTIONS

  • Choi, Junesang;Agarwal, Praveen;Mathur, Sudha;Purohit, Sunil Dutt
    • 대한수학회보
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    • 제51권4호
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    • pp.995-1003
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    • 2014
  • A remarkably large number of integral formulas involving a variety of special functions have been developed by many authors. Also many integral formulas involving various Bessel functions have been presented. Very recently, Choi and Agarwal derived two generalized integral formulas associated with the Bessel function $J_{\nu}(z)$ of the first kind, which are expressed in terms of the generalized (Wright) hypergeometric functions. In the present sequel to Choi and Agarwal's work, here, in this paper, we establish two new integral formulas involving the generalized Bessel functions, which are also expressed in terms of the generalized (Wright) hypergeometric functions. Some interesting special cases of our two main results are presented. We also point out that the results presented here, being of general character, are easily reducible to yield many diverse new and known integral formulas involving simpler functions.

SOME BILATERAL GENERATING FUNCTIONS INVOLVING THE CHAN-CHYAN-SRIVASTAVA POLYNOMIALS AND SOME GENERAL CLASSES OF MULTIVARIABLE POLYNOMIALS

  • Gaboury, Sebastien;Ozarslan, Mehmet Ali;Tremblay, Richard
    • 대한수학회논문집
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    • 제28권4호
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    • pp.783-797
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    • 2013
  • Recently, Liu et al. [Bilateral generating functions for the Chan-Chyan-Srivastava polynomials and the generalized Lauricella function, Integral Transform Spec. Funct. 23 (2012), no. 7, 539-549] investigated, in several interesting papers, some various families of bilateral generating functions involving the Chan-Chyan-Srivastava polynomials. The aim of this present paper is to obtain some bilateral generating functions involving the Chan-Chyan-Sriavastava polynomials and three general classes of multivariable polynomials introduced earlier by Srivastava in [A contour integral involving Fox's H-function, Indian J. Math. 14 (1972), 1-6], [A multilinear generating function for the Konhauser sets of biorthogonal polynomials suggested by the Laguerre polynomials, Pacific J. Math. 117 (1985), 183-191] and by Kaano$\breve{g}$lu and $\ddot{O}$zarslan in [Two-sided generating functions for certain class of r-variable polynomials, Mathematical and Computer Modelling 54 (2011), 625-631]. Special cases involving the (Srivastava-Daoust) generalized Lauricella functions are also given.

DIFFERENTIAL INEQUALITIES ASSOCIATED WITH CARATHÉODORY FUNCTIONS

  • In Hwa, Kim;Nak Eun, Cho
    • Nonlinear Functional Analysis and Applications
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    • 제27권4호
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    • pp.773-784
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    • 2022
  • The purpose of the present paper is to estimate some real parts for certain analytic functions with some applications in connection with certain integral operators and geometric properties. Also we extend some known results as special cases of main results presented here.

단순 웹브라우저의 설계와 구현 사례 (Case Study of Building Special-Purpose Simple Browser)

  • 우원택
    • 한국산업정보학회:학술대회논문집
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    • 한국산업정보학회 2002년도 춘계학술대회 논문집
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    • pp.136-147
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    • 2002
  • 본 연구는 인터넷 익스플로러 컨트롤을 사용하여 자신만의 웹브라우저를 만들어 봄으로써 브라우저에 대한 이해를 높이고 자신만의 고유목적의 브라우저를 제작하여 사용함으로써 특정인의 특정도메인 이외의 검색을 지양한다든지 청소년과 같은 어린이의 경우 특정도메인에 대한 접속을 방지한다든지 하는 기법들을 활용 할 수 있는 능력을 제고하고자 함에 있다.

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Generalized Incomplete Pochhammer Symbols and Their Applications to Hypergeometric Functions

  • Sahai, Vivek;Verma, Ashish
    • Kyungpook Mathematical Journal
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    • 제58권1호
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    • pp.67-79
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    • 2018
  • In this paper, we present new generalized incomplete Pochhammer symbols and using this we introduce the extended generalized incomplete hypergeometric functions. We derive certain properties, generating functions and reduction formulas of these extended generalized incomplete hypergeometric functions. Special cases of this extended generalized incomplete hypergeometric functions are also discussed.

NORMALIZED DINI FUNCTIONS CONNECTED WITH k-UNIFORMLY CONVEX AND k-STARLIKE FUNCTIONS

  • ECE, SADETTIN;EKER, SEVTAP SUMER;SEKER, BILAL
    • Journal of applied mathematics & informatics
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    • 제39권5_6호
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    • pp.717-723
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    • 2021
  • The purpose of the present paper is to give sufficient conditions for normalized Dini function which is the special combination of the generalized Bessel function of first kind to be in the classes k-starlike functions and k-uniformly convex functions.

A POWER SERIES ASSOCIATED WITH THE GENERALIZED HYPERGEOMETRIC FUNCTIONS WITH THE UNIT ARGUMENT WHICH ARE INVOLVED IN BELL POLYNOMIALS

  • Choi, Junesang;Qureshi, Mohd Idris;Majid, Javid;Ara, Jahan
    • Nonlinear Functional Analysis and Applications
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    • 제27권1호
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    • pp.169-187
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    • 2022
  • There have been provided a surprisingly large number of summation formulae for generalized hypergeometric functions and series incorporating a variety of elementary and special functions in their various combinations. In this paper, we aim to consider certain generalized hypergeometric function 3F2 with particular arguments, through which a number of summation formulas for p+1Fp(1) are provided. We then establish a power series whose coefficients are involved in generalized hypergeometric functions with unit argument. Also, we demonstrate that the generalized hypergeometric functions with unit argument mentioned before may be expressed in terms of Bell polynomials. Further, we explore several special instances of our primary identities, among numerous others, and raise a problem that naturally emerges throughout the course of this investigation.

CERTAIN INTEGRALS INVOLVING 2F1, KAMPÉDE FÉRIET FUNCTION AND SRIVASTAVA POLYNOMIALS

  • Agarwal, Praveen;Chand, Mehar;Choi, Junesang
    • 대한수학회논문집
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    • 제31권2호
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    • pp.343-353
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    • 2016
  • A remarkably large number of integrals whose integrands are associated, in particular, with a variety of special functions, for example, the hypergeometric and generalized hypergeometric functions have been recorded. Here we aim at presenting certain (presumably) new and (potentially) useful integral formulas whose integrands are involved in a product of $_2F_1$, Srivastava polynomials, and $Kamp{\acute{e}}$ de $F{\acute{e}}riet$ functions. The main results are derived with the help of some known definite integrals obtained earlier by Qureshi et al. [4]. Some interesting special cases of our main results are also considered.