Results 1 to 10 of about 58,842 (311)

Asymptotic computation of classical orthogonal polynomials [PDF]

open access: greenOrthogonal Polynomials: Current Trends and Applications, 2020
The classical orthogonal polynomials (Hermite, Laguerre and Jacobi) are involved in a vast number of applications in physics and engineering. When large degrees $n$ are needed, the use of recursion to compute the polynomials is not a good strategy for ...
A. Gil, J. Segura, N. M. Temme
semanticscholar   +5 more sources

Classical Orthogonal Polynomials Revisited [PDF]

open access: yesResults in Mathematics, 2021
This manuscript contains a small portion of the algebraic theory of orthogonal polynomials developed by Maroni and their applicability to the study and characterization of the classical families, namely Hermite, Laguerre, Jacobi, and Bessel polynomials ...
K. Castillo, J. Petronilho
semanticscholar   +5 more sources

On Semi-Classical Orthogonal Polynomials Associated with a Modified Sextic Freud-Type Weight [PDF]

open access: goldMathematics, 2020
Polynomials that are orthogonal with respect to a perturbation of the Freud weight function by some parameter, known to be modified Freudian orthogonal polynomials, are considered. In this contribution, we investigate certain properties of semi-classical
Abey Sherif Kelil, Appanah Rao Appadu
openalex   +2 more sources

d-Orthogonal Analogs of Classical Orthogonal Polynomials [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2016
Classical orthogonal polynomial systems of Jacobi, Hermite and Laguerre have the property that the polynomials of each system are eigenfunctions of a second order ordinary differential operator.
E. Horozov
semanticscholar   +4 more sources

A New First Finite Class of Classical Orthogonal Polynomials Operational Matrices: An Application for Solving Fractional Differential Equations

open access: diamondContemporary Mathematics, 2023
In this paper, new operational matrices (OMs) of ordinary and fractional derivatives (FDs) of a first finite class of classical orthogonal polynomials (FFCOP) are introduced.
H. M. Ahmed
openalex   +3 more sources

Some classical multiple orthogonal polynomials [PDF]

open access: greenJournal of Computational and Applied Mathematics, 2001
Recently there has been a renewed interest in an extension of the notion of orthogonal polynomials known as multiple orthogonal polynomials. This notion comes from simultaneous rational approximation (Hermite-Pade approximation) of a system of several functions.
Walter Van Assche, Els Coussement
openalex   +4 more sources

Dunkl-supersymmetric orthogonal functions associated with classical orthogonal polynomials [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2019
We consider the eigenvalue problem associated with the Dunkl-type differential operator (in which the reflection operator R is involved) in the context of supersymmetric quantum mechanical models. By solving this eigenvalue problem with the help of known
Yu Luo   +3 more
semanticscholar   +5 more sources

Comparative analysis on pulse compression with classical orthogonal polynomials for optimized time-bandwidth product

open access: yesAin Shams Engineering Journal, 2018
The theme of this paper is to analyze and compare the pulse compression with classical orthogonal polynomials (Chebyshev, Laguerre, Legendre and Hermite polynomials) of different orders.
Ankur Thakur, Salman Raju Talluri
doaj   +2 more sources

Classical 2-orthogonal polynomials and differential equations [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We construct the linear differential equations of third order satisfied by the classical 2‐orthogonal polynomials. We show that these differential equations have the following form: , where the coefficients are polynomials whose degrees are, respectively, less than or equal to 4, 3, 2, and 1. We also show that the coefficient R4,n(x) can be written as
Boukhemis Ammar, Zerouki Ebtissem
doaj   +3 more sources

Classical Sobolev Orthogonal Polynomials: Eigenvalue Problem [PDF]

open access: greenResults in Mathematics, 2019
We consider the discrete Sobolev inner product $$(f,g)_S=\int f(x)g(x)d +Mf^{(j)}(c)g^{(j)}(c), \quad j\in \mathbb{N}\cup\{0\}, \quad c\in\mathbb{R}, \quad M>0, $$ where $ $ is a classical continuous measure with support on the real line (Jacobi, Laguerre or Hermite).
Juan F. Mañas-Mañas   +1 more
openalex   +5 more sources

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