Results 41 to 50 of about 71,879 (309)

Discrete Fourier Analysis and Chebyshev Polynomials with $G_2$ Group [PDF]

open access: yes, 2012
The discrete Fourier analysis on the $30^{\degree}$-$60^{\degree}$-$90^{\degree}$ triangle is deduced from the corresponding results on the regular hexagon by considering functions invariant under the group $G_2$, which leads to the definition of four ...
Li, Huiyuan, Sun, Jiachang, Xu, Yuan
core   +3 more sources

Linearization of the product of orthogonal polynomials of a discrete variable [PDF]

open access: yesApplicationes Mathematicae, 1997
\textit{R. Askey} and \textit{G. Gasper} [J. Anal. Math. 31, 45-68 (1977; Zbl 0347.33006)] has given an explicit form for the coefficients in \(P_i(x)P_j(x)= \sum^{\min(i+j, B-1)}_{k= |i-j |} C_k^{ij} P_k(x)\), where \(\{P_k(x)\}\) be any system of classical orthogonal polynomials of a discrete variable. In this paper a linear recurrence relation for \(
Said Belmehdi   +2 more
openaire   +3 more sources

A Probablistic Origin for a New Class of Bivariate Polynomials

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
We present here a probabilistic approach to the generation of new polynomials in two discrete variables. This extends our earlier work on the 'classical' orthogonal polynomials in a previously unexplored direction, resulting in the discovery of an ...
Michael R. Hoare, Mizan Rahman
doaj   +1 more source

Generalized squeezed-coherent states of the finite one-dimensional oscillator and matrix multi-orthogonality

open access: yes, 2012
A set of generalized squeezed-coherent states for the finite u(2) oscillator is obtained. These states are given as linear combinations of the mode eigenstates with amplitudes determined by matrix elements of exponentials in the su(2) generators.
Alexei Zhedanov   +8 more
core   +1 more source

Accelerated and Improved Stabilization for High Order Moments of Racah Polynomials

open access: yesIEEE Access, 2023
Discrete Racah polynomials (DRPs) are highly efficient orthogonal polynomials and used in various scientific fields for signal representation. They find applications in disciplines like image processing and computer vision.
Basheera M. Mahmmod   +4 more
doaj   +1 more source

Orthogonal Polynomials in Mathematical Physics

open access: yes, 2017
This is a review of ($q$-)hypergeometric orthogonal polynomials and their relation to representation theory of quantum groups, to matrix models, to integrable theory, and to knot theory.
Chan, Chuan-Tsung   +3 more
core   +1 more source

Solvable Discrete Quantum Mechanics: q-Orthogonal Polynomials with |q|=1 and Quantum Dilogarithm [PDF]

open access: yes, 2015
Several kinds of q-orthogonal polynomials with |q|=1 are constructed as the main parts of the eigenfunctions of new solvable discrete quantum mechanical systems.
Gendenshtein L. E.   +4 more
core   +3 more sources

A hidden analytic structure of the Rabi model

open access: yes, 2013
The Rabi model describes the simplest interaction between a cavity mode with a frequency $\omega_c$ and a two-level system with a resonance frequency $\omega_0$.
Moroz, Alexander
core   +1 more source

Stable Calculation of Krawtchouk Functions from Triplet Relations

open access: yesMathematics, 2021
Deployment of the recurrence relation or difference equation to generate discrete classical orthogonal polynomials is vulnerable to error propagation. This issue is addressed for the case of Krawtchouk functions, i.e., the orthonormal basis derived from ...
Albertus C. den Brinker
doaj   +1 more source

LU factorizations, q=0 limits, and p-adic interpretations of some q-hypergeometric orthogonal polynomials

open access: yes, 2006
For little q-Jacobi polynomials and q-Hahn polynomials we give particular q-hypergeometric series representations in which the termwise q=0 limit can be taken. When rewritten in matrix form, these series representations can be viewed as LU factorizations.
A. Okounkov   +16 more
core   +2 more sources

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