Results 21 to 30 of about 1,268 (75)

On a generalized Jacobi transform

open access: yesInternational Journal of Stochastic Analysis, Volume 15, Issue 4, Page 371-385, 2002., 2002
In this paper, we study a generalized Jacobi transform and obtain images of certain functions under this transform. Furthermore, we define a Jacobi random variable and derive its moments, distribution function, and characteristic function.
José Sarabia, S. L. Kalla
wiley   +1 more source

Quasi‐definiteness of generalized Uvarov transforms of moment functionals

open access: yesJournal of Applied Mathematics, Volume 1, Issue 2, Page 69-90, 2001., 2001
When σ is a quasi‐definite moment functional with the monic orthogonal polynomial system {P n (x)}n=0∞, we consider a point masses perturbation τ of σ given by τ:=σ+λΣl=1 mΣk=0 ml((−1)kulk/k!)δ (k)(x − c l), where λ, ulk, and cl are constants with ci ≠ cj for i ≠ j. That is, τ is a generalized Uvarov transform of σ satisfying A(x) τ = A(x) σ, where A(x)
D. H. Kim, K. H. Kwon
wiley   +1 more source

An example of nonsymmetric semi‐classical form of class s = 1; generalization of a case of Jacobi sequence

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 24, Issue 10, Page 673-689, 2000., 2000
We give explicitly the recurrence coefficients of a nonsymmetric semi‐classical sequence of polynomials of class s = 1. This sequence generalizes the Jacobi polynomial sequence, that is, we give a new orthogonal sequence {Pˆn(α,α+1)(x,μ)}, where μ is an arbitrary parameter with ℜ(1 − μ) > 0 in such a way that for μ = 0 one has the well‐known Jacobi ...
Mohamed Jalel Atia
wiley   +1 more source

On 2‐orthogonal polynomials of Laguerre type

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 22, Issue 1, Page 29-48, 1999., 1999
Let be a sequence of 2‐orthogonal monic polynomials relative to linear functionals ω0 and ω1 (see Definition 1.1). Now, let be the sequence of polynomials defined by . When is, also, 2‐orthogonal, is called “classical” (in the sense of having the Hahn property). In this case, both and satisfy a third‐order recurrence relation (see below).
Khalfa Douak
wiley   +1 more source

Series Solution to a Fuchsian‐Type Differential Equation in Terms of Orthogonal Polynomials

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
In this paper, we study a thirteen‐parameter Fuchsian‐type second‐order linear differential equation that involves five regular singularities. By employing a tridiagonal representation technique, we formulate four cases under which the series solutions of the equation are obtained in terms of Jacobi polynomials.
Saiful Rahman Mondal   +2 more
wiley   +1 more source

Hermite Series with Polar Singularities [PDF]

open access: yes, 2012
MSC 2010: 33C45, 40G05Series in Hermite polynomials with poles on the boundaries of their regions of convergence are ...
Boychev, Georgi S.
core  

Characterization of the generalized Chebyshev-type polynomials of first kind

open access: yes, 2015
Orthogonal polynomials have very useful properties in the solution of mathematical problems, so recent years have seen a great deal in the field of approximation theory using orthogonal polynomials.
AlQudah, Mohammad A.
core   +2 more sources

Turán inequalities for symmetric orthogonal polynomials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 20, Issue 1, Page 1-7, 1997., 1997
A method is outlined to express a Turán determinant of solutions of a three term recurrence relation as a weighted sum of squares. This method is shown to imply the positivity of Turán determinants of symmetric Pollaczek polynomials, Lommel polynomials and q‐Bessel functions.
Joaquin Bustoz, Mourad E. H. Ismail
wiley   +1 more source

A Family of Hybrid Functions Generated by the Composition of Bessel and Mittag–Leffler Functions

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
In this paper, we employ a symbolic technique to introduce a new family of Mittag–Leffler–Bessel functions (MLBFs), formed by compositionally combining the classical Bessel functions of the first kind with the three‐parameter Mittag–Leffler function.
Maged G. Bin-Saad   +2 more
wiley   +1 more source

A note on monotonicity property of Bessel functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 20, Issue 3, Page 561-566, 1997., 1997
A theorem of Lorch, Muldoon and Szegö states that the sequence is decreasing for α > −1/2, where Jα(t) the Bessel function of the first kind order α and jα,k its kth positive root. This monotonicity property implies Szegö′s inequality , when α ≥ α′ and α′ is the unique solution of .
Stamatis Koumandos
wiley   +1 more source

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