Results 11 to 20 of about 561,686 (251)

Constructing Krall-Hahn orthogonal polynomials [PDF]

open access: greenJournal of Mathematical Analysis and Applications, 2014
Given a sequence of polynomials $(p_n)_n$, an algebra of operators $\mathcal A$ acting in the linear space of polynomials and an operator $D_p\in \mathcal A$ with $D_p(p_n)=\theta_np_n$, where $\theta_n$ is any arbitrary eigenvalue, we construct a new ...
Antonio J. Durán   +3 more
core   +4 more sources

Doubling (Dual) Hahn Polynomials: Classification and Applications [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2016
We classify all pairs of recurrence relations in which two Hahn or dual Hahn polynomials with different parameters appear. Such couples are referred to as (dual) Hahn doubles.
Oste, Roy, Van der Jeugt, Joris
core   +9 more sources

Dual -1 Hahn polynomials: "classical" polynomials beyond the Leonard duality [PDF]

open access: greenProceedings of the American Mathematical Society, 2011
We introduce the -1 dual Hahn polynomials through an appropriate $q \to -1$ limit of the dual q-Hahn polynomials. These polynomials are orthogonal on a finite set of discrete points on the real axis, but in contrast to the classical orthogonal ...
Tsujimoto, Satoshi   +2 more
core   +5 more sources

On the Limit from q-Racah Polynomials to Big q-Jacobi Polynomials [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2011
A limit formula from q-Racah polynomials to big q-Jacobi polynomials is given which can be considered as a limit formula for orthogonal polynomials.
Tom H. Koornwinder
doaj   +7 more sources

Laguerre-Freud equations for Generalized Hahn polynomials of type I [PDF]

open access: green, 2018
We derive a system of difference equations satisfied by the three-term recurrence coefficients of some families of discrete orthogonal polynomials.
Diego Dominici
openalex   +3 more sources

A Spectral Method Based on Hahn Polynomials for Numerical Solution of Fractional Integro-Differential Equations with Weakly Singular Kernel

open access: yesپژوهش‌های ریاضی, 2020
Introduction Despite wide applications of constant order fractional derivatives, some systems require the use of derivatives whose order changes with respect to other parameters.
Farideh Salehi   +2 more
doaj   +2 more sources

Indeterminate moment problem associated with continuous dual q-Hahn polynomials [PDF]

open access: greenJournal of difference equations and applications (Print), 2020
We study a limiting case of the Askey–Wilson polynomials when one of the parameters goes to infinity, namely continuous dual q-Hahn polynomials when q>1.
Kerstin Jordaan, Maurice Kenfack Nangho
openalex   +2 more sources

A high order $q$-difference equation for $q$-Hahn multiple orthogonal polynomials [PDF]

open access: green, 2009
A high order linear $q$-difference equation with polynomial coefficients having $q$-Hahn multiple orthogonal polynomials as eigenfunctions is given. The order of the equation is related to the number of orthogonality conditions that these polynomials ...
Abramowitz M.   +10 more
core   +5 more sources

The algebra of dual -1 Hahn polynomials and the Clebsch-Gordan problem of sl_{-1}(2) [PDF]

open access: green, 2013
The algebra H of the dual -1 Hahn polynomials is derived and shown to arise in the Clebsch-Gordan problem of sl_{-1}(2). The dual -1 Hahn polynomials are the bispectral polynomials of a discrete argument obtained from a q-> -1 limit of the dual q-Hahn ...
Alexei Zhedanov   +6 more
core   +2 more sources

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