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The structure relation for Askey-Wilson polynomials [PDF]

open access: yesJournal of Computational and Applied Mathematics, 2006
An explicit structure relation for Askey-Wilson polynomials is given. This involves a divided q-difference operator which is skew symmetric with respect to the Askey-Wilson inner product and which sends polynomials of degree n to polynomials of degree n ...
Koornwinder, Tom H.
core   +6 more sources

Befriending Askey–Wilson polynomials [PDF]

open access: greenInfinite Dimensional Analysis, Quantum Probability and Related Topics, 2014
We recall five families of polynomials constituting a part of the so-called Askey–Wilson scheme. We do this to expose properties of the Askey–Wilson (AW) polynomials that constitute the last, most complicated element of this scheme. In doing so we express AW density as a product of the density that makes q-Hermite polynomials orthogonal times a ...
Paweł J. Szabłowski
openalex   +5 more sources

A projection formula for the Askey-Wilson polynomials and an application [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1988
A projection formula for p n ( x ; a , b , c , d | q ) {p_n}(x;a,b,c,d|q) , the Askey-Wilson polynomials, is obtained by using a generalization of Askey and Wilson’s q q
Mizan Rahman
  +4 more sources

On Another Characterization of Askey-Wilson Polynomials [PDF]

open access: greenResults in Mathematics, 2022
In this paper we show that the only sequences of orthogonal polynomials $(P_n)_{n\geq 0}$ satisfying \begin{align*} ϕ(x)\mathcal{D}_q P_{n}(x)=a_n\mathcal{S}_q P_{n+1}(x) +b_n\mathcal{S}_q P_n(x) +c_n\mathcal{S}_q P_{n-1}(x), \end{align*} ($c_n\neq 0$) where $ϕ$ is a well chosen polynomial of degree at most two, $\mathcal{D}_q$ is the Askey-Wilson ...
D. Mbouna, A. Suzuki
openalex   +3 more sources

Proof of two conjectures on Askey-Wilson polynomials

open access: bronzeProceedings of the American Mathematical Society, 2023
We give positive answer to two conjectures posed by M. E. H Ismail in his monograph [Classical and quantum orthogonal polynomials in one variable, Cambridge University Press, Cambridge, 2005]. These results generalize the classical problems of Sonine and Hahn.
K. Castillo, D. Mbouna
openalex   +4 more sources

Askey-Wilson polynomial

open access: diamondScholarpedia, 2012
Askey-Wilson polynomial refers to a four-parameter family of q-hypergeometric orthogonal polynomials which contains all families of classical orthogonal polynomials (in the wide sense) as special or limit cases.
Tom H. Koornwinder
openalex   +4 more sources

On the Askey-Wilson and Rogers Polynomials [PDF]

open access: bronzeCanadian Journal of Mathematics, 1988
The q-shifted factorial (a)n or (a; q)n isand an empty product is interpreted as 1. Recently, Askey and Wilson [6] introduced the polynomials1.1where1.2and1.3We shall refer to these polynomials as the Askey-Wilson polynomials or the orthogonal 4ϕ3 polynomials. They generalize the 6 — j symbols and are the most general classical orthogonal polynomials, [
Mourad E. H. Ismail, Dennis Stanton
openalex   +3 more sources

The factorization method for the Askey-Wilson polynomials.

open access: greenJournal of Computational and Applied Mathematics, 1998
A special Infeld-Hall factorization is given for the Askey-Wilson second order q-difference operator. It is then shown how to deducd a generalization of the corresponding Askey-Wilson polynomials.
Gaspard Bangerezako
openalex   +5 more sources

The associated Askey-Wilson polynomials [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1991
We derive some contiguous relations for very well-poised 8 7 series and use them to construct two linearly independent solutions of the three-term recurrence relation of the associated Askey-Wilson polynomials. We then use these solutions to find explicit representations of two families of associated Askey-Wilson polynomials.
Mourad E. H. Ismail, Mizan Rahman
openalex   +2 more sources

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