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We obtain special solutions of the $q$-Heun equation which are expressed as finite summations of $q$-hypergeometric functions. These solutions are obtained by considering the $q$-integral transformations of the polynomial-type solutions.

Classical Analysis and ODEs · Mathematics 2026-05-05 Ayaka Murakami , Kouichi Takemura

We find transformations of variables which preserve the form of the equation for the kernels of integral relations among solutions of the Heun equation. These transformations lead to new kernels for the Heun equation, given by single…

Mathematical Physics · Physics 2015-05-18 Léa Jaccoud El-Jaick , Bartolomeu D. B. Figueiredo

The $q$-Heun equation and its variants arise as degenerations of Ruijsenaars-van Diejen operators with one particle. We investigate local properties of these equations. In particular we characterize the variants of the $q$-Heun equation by…

Classical Analysis and ODEs · Mathematics 2018-06-19 Kouichi Takemura

Firstly, we construct kernels of integral relations among solutions of the confluent Heun equation (CHE) and its limit, the reduced CHE (RCHE). In both cases we generate additional kernels by systematically applying substitutions of…

Mathematical Physics · Physics 2015-03-03 Léa Jaccoud El-Jaick , Bartolomeu D. B. Figueiredo

The $q$-Heun equation is a $q$-difference analogue of Heun's differential equation. We review several solutions of Heun's differential equation and investigate polynomial-type solutions of $q$-Heun equation. The limit $q\to 1$ corresponding…

Classical Analysis and ODEs · Mathematics 2019-10-02 Kouichi Takemura

We obtain several degenerations of the $q$-Heun equation by considering the linear $q$-difference equations associated to several $q$-Painlev\'e equations. We establish definitions of the confluent $q$-Heun equation, the biconfluent…

Classical Analysis and ODEs · Mathematics 2025-05-13 Chihiro Sato , Kouichi Takemura

In this paper, we employ the fractional $q$-calculus in solving a triple system of $q$-Integral equations, where the kernel is the third Jackson $q$-Bessel functions. The solution is reduced to two simultaneous Fredholm $q$-integral…

Mathematical Physics · Physics 2015-06-04 Z. S. Mansour , M. A. AL-Towailb

We consider the non-stationary Heun equation, also known as quantum Painlev\'e VI, which has appeared in different works on quantum integrable models and conformal field theory. We use a generalized kernel function identity to transform the…

Mathematical Physics · Physics 2018-02-19 Farrokh Atai , Edwin Langmann

In the present paper the algebras of functions on quantum homogeneous spaces are studied. The author introduces the algebras of kernels of intertwining integral operators and constructs quantum analogues of the Poisson and Radon transforms…

q-alg · Mathematics 2009-10-28 Leonid L. Vaksman

Integral representations of two $q$-difference operators are provided in terms of special functions arising in the theory of asymptotic solutions to $q$-difference equations in the complex domain. Both representations are unified through…

Complex Variables · Mathematics 2026-03-27 Antonio Cáceres , Alberto Lastra , Sławomir Michalik , Maria Suwińska

The aim of the present study is to establish some properties for q-Bessel matrix polynomials such as several q-differential matrix equation, q-differential matrix relations and q-recurrence matrix relations, and integral representation,…

General Mathematics · Mathematics 2025-10-23 Ayman Shehata , M. Tawfik , Ayman M. Mahmoud , Nada Mostafa

After a brief introduction to Heun type functions we note that the actual solutions of the eigenvalue equation emerging in the calculation of the one loop contribution to QCD from the Belavin-Polyakov-Schwarz-Tyupkin instanton and the…

High Energy Physics - Theory · Physics 2017-03-10 T. Birkandan , M. Hortaçsu

In our earlier work math.QA/9808015 some results on integral representations of functions in quantum disc were announced. It was then shown in math.QA/9808037 that the validity of those results is related to the invariance of kernels of…

Quantum Algebra · Mathematics 2007-05-23 D. Shklyarov , S. Sinel'shchikov , L. Vaksman

We characterize of the $q$-Bernstein functions in terms of $q$-Laplace transform. Moreover, we present several results of $q$-completely monotonic, $q$-log completely monotonic and $q$-Bernstein functions.

Classical Analysis and ODEs · Mathematics 2016-02-10 Valmir Krasniqi , Toufik Mansour

We prove tur\'an type inequalities for Dunkl kernel. We provide a $q$-integral representation for the $q$-Dunkl kernel. Using a $q$-version of Schwartz inequality, we get a tur\'an type inequalities for $q$-Dunkl kernel.

Classical Analysis and ODEs · Mathematics 2015-03-17 Khaled Mehrez , Mariem Ben Said , Jamel El Kamel

We review Darboux-Crum transformation of Heun's differential equation. By rewriting an integral transformation of Heun's differential equation into a form of elliptic functions, we see that the integral representation is a generalization of…

Classical Analysis and ODEs · Mathematics 2014-11-20 Kouichi Takemura

In this paper we study the variation diminishing kernel as a part of the $q$-calculus. We introduce the $q$-Macdonald function a newborne in the family of the $q$-special functions which play a central role in this study.

Quantum Algebra · Mathematics 2020-05-01 Lazhar Dhaouadi , Saidani Islem , Hedi Elmonser

Integral relations and transformation rules are used to obtain, out of an asymptotic solution, a new group of four pairs of solutions to the double-confluent Heun equation. Each pair presents the same series coefficients but has solutions…

Mathematical Physics · Physics 2007-05-23 Bartolomeu D. B. Figueiredo

In this paper we obtain the closed forms of some hypergeometric functions. As an application, we obtain the explicit forms of the Bergman kernel functions for intersection of two complex ellipsoids $\{z \in \mathbb{C}^3 \colon |z_1|^p +…

Complex Variables · Mathematics 2015-07-23 Tomasz Beberok

Several expansions of the solutions to the confluent Heun equation in terms of incomplete Beta functions are constructed. A new type of expansion involving certain combinations of the incomplete Beta functions as expansion functions is…

Mathematical Physics · Physics 2009-09-10 Artur Ishkhanyan
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