Discrete Painlevé equations for recurrence coefficients of Laguerre–Hahn orthogonal polynomials of class one

G Filipuk, MN Rebocho - Integral Transforms and Special Functions, 2016 - Taylor & Francis
In this paper we study recurrences for Laguerre–Hahn orthogonal polynomials of class one.
It is shown for some families of such Laguerre–Hahn polynomials that the coefficients of the …

[HTML][HTML] Characterization theorem for Laguerre–Hahn orthogonal polynomials on non-uniform lattices

A Branquinho, MN Rebocho - Journal of Mathematical Analysis and …, 2015 - Elsevier
A characterization theorem for Laguerre–Hahn orthogonal polynomials on non-uniform
lattices is stated and proved. This theorem proves the equivalence between the Riccati …

Laguerre–Hahn orthogonal polynomials on the real line

MDN Rebocho - Random Matrices: Theory and Applications, 2020 - World Scientific
A survey is given on sequences of orthogonal polynomials related to Stieltjes functions
satisfying a Riccati type differential equation with polynomial coefficients—the so-called …

Classification of Laguerre–Hahn orthogonal polynomials of class one

G Filipuk, MN Rebocho - Mathematische Nachrichten, 2020 - Wiley Online Library
We study orthogonal polynomials related to Stieltjes functions satisfying Riccati type
differential equations with polynomial coefficients, AS′= BS 2+ CS+ D, with max {deg (A) …

Integrable differential systems for deformed Laguerre–Hahn orthogonal polynomials

M das Neves Rebocho, N Witte - Nonlinearity, 2023 - iopscience.iop.org
of the Laguerre–Hahn class, whose Stieltjes functions satisfy a Riccati type differential
equation with polynomial coefficients, which are subject to a deformation parameter t. We …

A system of nonlinear difference equations for recurrence relation coefficients of a modified Jacobi weight

Y Chen, G Filipuk, MN Rebocho - Recent trends in formal and …, 2023 - books.google.com
A system of nonlinear difference equations for recurrence relation coefficients of a modified
Jacobi weight Page 120 Contemporary Mathematics Volume 782 , 2023 https://doi. org/10.1090/conm/782/15724 …

Differential equations for families of semi-classical orthogonal polynomials within class one

G Filipuk, MN Rebocho - Applied Numerical Mathematics, 2018 - Elsevier
In this paper we study families of semi-classical orthogonal polynomials within class one.
We derive general second or third order ordinary differential equations (with respect to …

On linear spectral transformations and the Laguerre–Hahn class

K Castillo, MN Rebocho - Integral Transforms and Special …, 2017 - Taylor & Francis
We study the Christoffel and Geronimus transformations for Laguerre–Hahn orthogonal
polynomials on the real line. It is analysed the modification on the corresponding difference …

Deformed Laguerre–Hahn orthogonal polynomials on the real line

A Branquinho, MN Rebocho - Applied Mathematics and Computation, 2014 - Elsevier
One derives discrete dynamical systems related to Laguerre–Hahn orthogonal polynomials.
One studies deformations of the recurrence relation coefficients of the orthogonal …

A characterization theorem for semi-classical orthogonal polynomials on non-uniform lattices

A Branquinho, Y Chen, G Filipuk… - Applied Mathematics and …, 2018 - Elsevier
It is proved a characterization theorem for semi-classical orthogonal polynomials on non-
uniform lattices that states the equivalence between the Pearson equation for the weight and …