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Spherical Bessel functions appear commonly in many areas of physics wherein there is both translation and rotation invariance, and often integrals over products of several arise. Thus, analytic evaluation of such integrals with different…

Mathematical Physics · Physics 2023-12-25 Jessica Chellino , Zachary Slepian

We provide quantitative weighted weak type estimates for non-integral square functions in the critical case $p=2$ in terms of the $A_p$ and reverse H\"older constants associated to the weight. The method of proof uses a decoupling of the…

Classical Analysis and ODEs · Mathematics 2025-06-19 Dario Mena , Maria Carmen Reguera , Luz Roncal

A set of exactly computable orthonormal basis functions that are useful in computations involving constituent quarks is presented. These basis functions are distinguished by the property that they fall off algebraically in momentum space…

Nuclear Theory · Physics 2009-10-30 B. D. Keister , W. N. Polyzou

In this note unbounded hyperexpansive weighted composition operators are investigated. AS a consequence unbounded hyperexpansive multiplication and composition operators are characterized.

Functional Analysis · Mathematics 2014-02-21 Yousef Estaremi

We develop a new point of view to introduce families of functions, which can be identified as generalization of the ordinary trigonometric or hyperbolic functions. They are defined using a procedure based on umbral methods, inspired to the…

Classical Analysis and ODEs · Mathematics 2017-03-01 Giuseppe Dattoli , Silvia Licciardi , Rosa Maria Pidatella

It is shown that generalized trigonometric functions and generalized hyperbolic functions can be transformed from each other. As an application of this transformation, a number of properties for one immediately lead to the corresponding…

Classical Analysis and ODEs · Mathematics 2021-12-28 Hiroki Miyakawa , Shingo Takeuchi

A differential algebra of nonlinear generalized functions is presented as a tool for a wide range of nonsmooth nonlinear problems. The power of the differential algebra is used to do mathematical calculations or proofs; then the final…

Mathematical Physics · Physics 2007-05-23 J. F. Colombeau

We consider Hilbert-type functions associated with difference (not necessarily inversive) field extensions and systems of algebraic difference equations in the case when the translations are assigned some integer weights. We will show that…

Commutative Algebra · Mathematics 2016-09-28 Alexander Levin

In the last two decades, many algebras of generalized functions have been constructed, particularly the so-called generalized Sobolev algebras. Our goal is to study the latter and some of their main properties. In this framework, we pose…

Functional Analysis · Mathematics 2016-08-16 Séverine Bernard , Silvère Paul Nuiro

We propose a unified approach to $q$-special functions, which are degenerations of basic hypergeometric functions ${}_2\phi_1(a,b;c;q,x)$. We obtain a list of seven different class of $q$-special functions: ${}_2\phi_1, {}_1\phi_1$, two…

Classical Analysis and ODEs · Mathematics 2011-03-29 Yousuke Ohyama

Generalised definitions of exponential, trigonometric sine and cosine and hyperbolic sine and cosine functions are given. In the lowest order, these functions correspond to ordinary exponential, trigonometric sine etc. Some of the…

Mathematical Physics · Physics 2007-05-23 Debasis Biswas , S. Biswas , Asoke P. Chattopadhyay

We present a generalization of the sl(2) algebra where the algebraic relations are constructed with the help of a general function of one of the generators. When this function is linear this algebra is a deformed sl(2) algebra. In the…

Mathematical Physics · Physics 2009-11-07 E. M. F. Curado , M. A. Rego-Monteiro

Generating functions and functional equations of Dickson polynomials of the first and second kind are derived and continued analytically. These formulae are expressed in terms of the incomplete gamma function over complex variables of the…

Combinatorics · Mathematics 2022-11-29 Robert Reynolds

A new type of combinations of Bernstein operators is given in [1]. Here, we introduce another one, which can be used to approximate the functions with singularities. The direct and inverse results of the weighted approximation of this new…

Functional Analysis · Mathematics 2011-06-28 Wen-ming Lu , Lin Zhang

Let $k$ be a field and let $\text{GW}(k)$ be the Grothendieck-Witt ring of virtual non-degenerate symmetric bilinear forms over $k$. We develop methods for computing the quadratic Euler characteristic $\chi(X/k)\in \text{GW}(k)$ for $X$ a…

Algebraic Geometry · Mathematics 2022-04-20 Marc Levine , Simon Pepin Lehalleur , Vasudevan Srinivas

In this paper, we investigate the Euler-type integral representations for the generalized hypergeometric matrix function and develop some transformations in terms of hypergeometric matrix functions. Furthermore, unit and half arguments have…

Classical Analysis and ODEs · Mathematics 2023-03-01 Ankit Pal , Kiran Kumari

We generalize generating functions for hypergeometric orthogonal polynomials, namely Jacobi, Gegenbauer, Laguerre, and Wilson polynomials. These generalizations of generating functions are accomplished through series rearrangement using…

Classical Analysis and ODEs · Mathematics 2013-02-12 Howard S. Cohl , Connor MacKenzie , Hans Volkmer

This paper extends previous work on linear correlations of representation functions of positive definite binary quadratic forms to allow indefinite forms.

Number Theory · Mathematics 2012-05-21 Lilian Matthiesen

We introduce the notion of the generalized-analytical function of the poly-number variable, which is a non-trivial generalization of the notion of analytical function of the complex variable and, therefore, may turn out to be fundamental in…

Mathematical Physics · Physics 2007-05-23 G. I. Garasko

We explain how to construct certain potential functions for the hyperbolic structures of a knot complement, which are closely related to the analytic functions on the deformation space of hyperbolic structures.

Geometric Topology · Mathematics 2007-05-23 Yoshiyuki Yokota