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What is $\ldots\ $ a multiple orthogonal polynomial?

open access: yesNotices of the American Mathematical Society, 2016
This is an extended version of our note in the Notices of the American Mathematical Society 63 (2016), no. 9, in which we explain what multiple orthogonal polynomials are and where they appear in various applications.Comment: 5 pages, 2 ...
Martínez-Finkelshtein, Andrei   +1 more
core   +2 more sources

On the q-Charlier Multiple Orthogonal Polynomials [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2015
We introduce a new family of special functions, namely q-Charlier multiple orthogonal polynomials. These polynomials are orthogonal with respect to q-analogues of Poisson distributions. We focus our attention on their structural properties.
Arvesú, Jorge   +1 more
core   +10 more sources

Multiple orthogonal polynomial ensembles

open access: yes, 2009
Multiple orthogonal polynomials are traditionally studied because of their connections to number theory and approximation theory. In recent years they were found to be connected to certain models in random matrix theory.
Kuijlaars, Arno B. J.
core   +3 more sources

Nearest Neighbor Recurrence Relations for Meixner–Angelesco Multiple Orthogonal Polynomials of the Second Kind

open access: yesMathematics, 2023
This paper studies a new family of Angelesco multiple orthogonal polynomials with shared orthogonality conditions with respect to a system of weight functions, which are complex analogs of Pascal distributions on a legged star-like set.
Jorge Arvesú   +1 more
doaj   +1 more source

Multiple big q-Jacobi polynomials [PDF]

open access: yesBulletin of Mathematical Sciences, 2020
Here, we investigate type II multiple big q-Jacobi orthogonal polynomials. We provide their explicit formulae in terms of basic hypergeometric series, raising and lowering operators, Rodrigues formulae, third-order q-difference equation, and we obtain ...
Fethi Bouzeffour, Mubariz Garayev
doaj   +1 more source

anar Orthogonal Polynomials as Type I Multiple Orthogonal Polynomials

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2023
A recent result of S.-Y. Lee and M. Yang states that the planar orthogonal polynomials orthogonal with respect to a modified Gaussian measure are multiple orthogonal polynomials of type II on a contour in the complex plane. We show that the same polynomials are also type I orthogonal polynomials on a contour, provided the exponents in the weight are ...
Berezin, Sergey   +2 more
openaire   +4 more sources

On Perfectness of Systems of Weights Satisfying Pearson’s Equation with Nonstandard Parameters

open access: yesAxioms, 2023
Measures generating classical orthogonal polynomials are determined by Pearson’s equation, whose parameters usually provide the positivity of the measures.
Alexander Aptekarev   +2 more
doaj   +1 more source

Planar orthogonal polynomials as Type II multiple orthogonal polynomials [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2019
We show that the planar orthogonal polynomials with $l$ logarithmic singularities in the potential are the multiple orthogonal polynomials (Hermite-Pad polynomials) of Type II with $l$ measures. We also find the ratio between the determinant of the moment matrix corresponding to the multiple orthogonal polynomials and the determinant of the moment ...
Seung-Yeop Lee, Meng Yang
openaire   +3 more sources

Coherent Dynamics of Quantum Systems with Non-Uniform Fourier Space Excited by Laser Radiation

open access: yesZanco Journal of Pure and Applied Sciences, 2022
The algorithm is presented to solve dynamical equations for excitation of molecular models with multiple energy levels. It uses only discrete structures: discrete orthogonal polynomials constructed specially in Fourier space of the probability amplitudes,
Sary Banjak , Vadim Savva
doaj   +1 more source

On the ω-multiple Meixner polynomials of the first kind

open access: yesJournal of Inequalities and Applications, 2020
In this study, we introduce a new family of discrete multiple orthogonal polynomials, namely ω-multiple Meixner polynomials of the first kind, where ω is a positive real number.
Sonuç Zorlu Oğurlu, İlkay Elidemir
doaj   +1 more source

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