Results 21 to 30 of about 79,087 (306)

Characterization of classical type orthogonal polynomials [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
We characterize the classical type orthogonal polynomials { P n ( x ) } 0 ∞ \{ {P_n}(x)\} _0^\infty satisfying a fourth-order differential equation of type \[ ∑ i
KWON, KH Kwon, Kil Hyun   +3 more
openaire   +2 more sources

On 2-orthogonal polynomials of Laguerre type

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
Let {Pn}n≥0 be a sequence of 2-orthogonal monic polynomials relative to linear functionals ω0 and ω1 (see Definition 1.1). Now, let {Qn}n≥0 be the sequence of polynomials defined by Qn:=(n+1)−1P′n+1,n≥0.
Khalfa Douak
doaj   +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, 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 ...
Mohamed Jalel Atia
doaj   +1 more source

Representing by Orthogonal Polynomials for Sums of Finite Products of Fubini Polynomials

open access: yesMathematics, 2019
In the classical connection problem, it is dealt with determining the coefficients in the expansion of the product of two polynomials with regard to any given sequence of polynomials.
Dae San Kim   +3 more
doaj   +1 more source

A NOTE FOR THE DUNKL-CLASSICAL POLYNOMIALS

open access: yesПроблемы анализа, 2022
In this paper, we give a new characterization for the Dunkl-classical orthogonal polynomials. The previous characterization has been illustrated by some examples.
Y. Habbachi, B. Bouras
doaj   +1 more source

Generalized Burchnall-Type Identities for Orthogonal Polynomials and Expansions [PDF]

open access: yes, 2018
Burchnall's method to invert the Feldheim-Watson linearization formula for the Hermite polynomials is extended to all polynomial families in the Askey-scheme and its $q$-analogue.
Ismail, Mourad E. H.   +2 more
core   +3 more sources

Orthogonal Polynomials on the Unit Ball and Fourth-Order Partial Differential Equations [PDF]

open access: yes, 2016
The purpose of this work is to analyse a family of mutually orthogonal polynomials on the unit ball with respect to an inner product which includes an additional term on the sphere.
Martínez, Clotilde, Piñar, Miguel A.
core   +1 more source

A ‘missing’ family of classical orthogonal polynomials [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2011
We study a family of "classical" orthogonal polynomials which satisfy (apart from a 3-term recurrence relation) an eigenvalue problem with a differential operator of Dunkl-type. These polynomials can be obtained from the little $q$-Jacobi polynomials in the limit $q=-1$.
Vinet, Luc, Zhedanov, Alexei
openaire   +2 more sources

Q-classical orthogonal polynomials: a very classical approach [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 1999
Dirección General de Enseñanza ...
Marcellán Español, Francisco   +1 more
openaire   +9 more sources

Determinant inequalities for sieved ultraspherical polynomials

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
Paul Turan first observed that the Legendre polynomials satisfy the inequality Pn2(x)−Pn−1(x)Pn(x)>0 ...
J. Bustoz, I. S. Pyung
doaj   +1 more source

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