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We identify computability-theoretic properties enabling us to separate various statements about partial orders in reverse mathematics. We obtain simpler proofs of existing separations, and deduce new compound ones. This work is part of a…

Logic · Mathematics 2016-12-14 Ludovic Patey

In this paper we introduce a family of rational approximations of the reciprocal of a $\phi$-function involved in the explicit solutions of certain linear differential equations, as well as in integration schemes evolving on manifolds. The…

Numerical Analysis · Mathematics 2021-05-18 Paola Boito , Yuli Eidelman , Luca Gemignani

A finite number of rational functions are compatible if they satisfy the compatibility conditions of a first-order linear functional system involving differential, shift and q-shift operators. We present a theorem that describes the…

Symbolic Computation · Computer Science 2013-01-24 Shaoshi Chen , Ruyong Feng , Guofeng Fu , Ziming Li

This paper considers the inverse problem of recovering both the unknown, spatially-dependent conductivity $a(x)$ and the potential $q(x)$ in a parabolic equation from overposed data consisting of the value of solution profiles taken at a…

Numerical Analysis · Mathematics 2019-05-30 Barbara Kaltenbacher , William Rundell

The derivatives with respect to order {\nu} for the Bessel functions of argument x (real or complex) are studied. Representations are derived in terms of integrals that involve the products pairs of Bessel functions, and in turn series…

Classical Analysis and ODEs · Mathematics 2016-08-05 T. M. Dunster

We show by a dynamical argument that there is a positive integer valued function $q$ defined on positive integer set $\mathbb N$ such that $q([\log n]+1)$ is a super-polynomial with respect to positive $n$ and \[\liminf_{n\rightarrow\infty}…

Dynamical Systems · Mathematics 2021-04-09 Enhui Shi , Hui Xu

The aim of this paper is to give a new approach to modified $q$-Bernstein polynomials for functions of several variables. By using these polynomials, the recurrence formulas and some new interesting identities related to the second Stirling…

Number Theory · Mathematics 2019-07-04 Serkan Araci , Mehmet Acikgoz , Hassan Jolany , Armen Bagdasaryan

I prove closed-form identities that I discovered for the first and second derivatives of the $q$-rationals at $q = 1$, in which the $q$-rationals are defined as they are in arXiv:1812.00170.

History and Overview · Mathematics 2024-10-21 Justin Lasker

We are studying the fundamental tools for a quantum calculus based on the Tsallis $q$-exponential In particular we are looking at $q$-Fock spaces, structural identities, as well as rational functions in this context.

Functional Analysis · Mathematics 2025-05-22 Daniel Alpay , Paula Cerejeiras , Uwe Kaehler

We derive raising and lowering operators for orthogonal polynomials on the unit circle and find second order differential and $q$-difference equations for these polynomials. A general functional equation is found which allows one to relate…

Classical Analysis and ODEs · Mathematics 2007-05-23 Mourad E. H. Ismail , Nicholas S. Witte

We construct the new q-extension of Bernoulli numbers and polynomials in this paper. Finally we consider the q-zeta functions which interpolate the new q-extension of Bernoulli numbers and polynomials.

Number Theory · Mathematics 2007-05-23 Taekyun Kim

In this paper, we deal with q-Euler numbers and q-Bernoulli numbers. We derive some interesting relations for q-Euler numbers and polynomials by using their generating function and derivative operator. Also, we show between the q-Euler…

Number Theory · Mathematics 2013-08-14 Serkan Araci , Mehmet Acikgoz , Jong Jin Seo

We describe explicit algorithms for factoring q-difference operators and solving q-difference equations. These are well known results, presented in a "concrete" form. ----- Nous decrivons des algorithmes explicites pour la factorisation…

Quantum Algebra · Mathematics 2010-03-25 Jacques Sauloy

An identity involving basic Bessel functions and Al-Salam--Chihara polynomials is proved for which we recover Graf's addition formula for the Bessel function as the base $q$ tends to $1$. The corresponding product formula is derived. Some…

Classical Analysis and ODEs · Mathematics 2016-09-06 Erik Koelink

Using a special case of the Efros theorem which was derived by Wlodarski, and operational calculus, it was possible to derive many infinite integrals, finite integrals and integral identities for the function represented by the inverse…

Classical Analysis and ODEs · Mathematics 2021-02-23 Alexander Apelblat , Francesco Mainardi

In this paper, by the technique of inverse relations and comparing coefficients, we establish some generalized forms of Andrews' q-series identity and two new Bailey pairs and q-identities closely related to Andrews-Warnaar's sum identity…

Combinatorics · Mathematics 2026-03-31 Qi Chen

Let $(P_n)_n$ and $(Q_n)_n$ be two sequences of monic polynomials linked by a type structure relation such as $$ Q_{n}(x)+r_nQ_{n-1}(x)=P_{n}(x)+s_nP_{n-1}(x)+t_nP_{n-2}(x)\;, $$ where $(r_n)_n$, $(s_n)_n$ and $(t_n)_n$ are sequences of…

Classical Analysis and ODEs · Mathematics 2012-12-19 M. Alfaro , A. Peña , J. Petronilho , M. L. Rezola

Using a general $q$-series expansion, we derive some nontrivial $q$-formulas involving many infinite products. A multitude of Hecke--type series identities are derived. Some general formulas for sums of any number of squares are given. A…

Number Theory · Mathematics 2018-05-15 Zhi-Guo Liu

We obtain formulas for the coefficients of positive and negative powers of a partial theta function.

Number Theory · Mathematics 2024-08-27 Johann Cigler

In this work we shall apply the Bochner's theorem to prove certain combinations of Euler's q-exponentials are positive definite functions. Then we apply this positivity to prove curious inequalities for the Jacobi theta function…

Classical Analysis and ODEs · Mathematics 2019-01-14 Ruiming Zhang
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