Results 41 to 50 of about 984,401 (366)

Orthogonal polynomials of dimension –1 in the non-definite case [PDF]

open access: yesRendiconti di Matematica e delle Sue Applicazioni, 1994
: Orthogonal polynomials of dimension d = −1 are a particular case of vector orthogonal polynomials which are, themselves, a particular case of biorthogonal polynomials.
C. BREZINSKI , M. REDIVO-ZAGLIA
doaj  

On some hypergeometric Sobolev orthogonal polynomials with several continuous parameters

open access: yesVisnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika, 2023
In this paper we study the following hypergeometric polynomials: $$ \mathcal{P}_n(x) = \mathcal{P}_n(x;\alpha,\beta,\delta_1, \dots,\delta_\rho,\kappa_1,\dots,\kappa_\rho) = $$ $$ = {}_{\rho+2} F_{\rho+1} (-n,n+\alpha+\beta+1,\delta_1+1, \dots,\delta_ ...
Sergey Zagorodnyuk
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 high order $q$-difference equation for $q$-Hahn multiple orthogonal polynomials [PDF]

open access: yes, 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   +3 more sources

A General Method for Generating Discrete Orthogonal Matrices

open access: yesIEEE Access, 2021
Discrete orthogonal matrices have applications in information coding and cryptography. It is often challenging to generate discrete orthogonal matrices.
Ka-Hou Chan, Wei Ke, Sio-Kei Im
doaj   +1 more source

Fourier coefficients for Laguerre–Sobolev type orthogonal polynomials [PDF]

open access: yesArab Journal of Mathematical Sciences, 2023
Purpose – In this paper, the authors take the first step in the study of constructive methods by using Sobolev polynomials. Design/methodology/approach – To do that, the authors use the connection formulas between Sobolev polynomials and classical ...
Alejandro Molano
doaj   +1 more source

A set of orthogonal polynomials induced by a given orthogonal polynomial

open access: yesAequationes Mathematicae, 1993
Suppose one knows a system of orthogonal polynomials \(\pi_ n(x)\) \((n=0,1,2,\ldots)\) with respect to some measure \(d \sigma\) on the real line and that one wants to find the orthogonal polynomials \(\hat\pi_{n,m}\) \((n=0,1,2,\ldots)\) with respect to the modified measure \(\pi_ m^ 2(x)d\sigma(x)\).
Gautschi, Walter, Li, Shikang
openaire   +3 more sources

RECURRENCE RELATIONS FOR SOBOLEV ORTHOGONAL POLYNOMIALS

open access: yesПроблемы анализа, 2020
We consider recurrence relations for the polynomials orthonormal with respect to the Sobolev-type inner product and generated by classical orthogonal polynomials, namely: Jacobi polynomials, Legendre polynomials, Chebyshev polynomials of the first and ...
M. S. Sultanakhmedov
doaj   +1 more source

Vector functions for direct analysis of annular wavefront slope data

open access: yesResults in Optics, 2022
In the aberration analysis of a wavefront over a certain domain, the polynomials that are orthogonal over and represent balanced aberrations for this domain are used.
Virendra N. Mahajan, Eva Acosta
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

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