Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/35075
Title: | Riemann–Hilbert problem for the matrix Laguerre biorthogonal polynomials: the matrix discrete Painlevé IV |
Author: | Branquinho, Amílcar Moreno, Ana Foulquié Fradi, Assil Mañas, Manuel |
Keywords: | Riemann–Hilbert problems Matrix Pearson equations Matrix biorthogonal polynomials Discrete integrable systems Non-Abelian discrete Painlevé IV equation |
Issue Date: | 7-Apr-2022 |
Publisher: | MDPI |
Abstract: | In this paper, the Riemann–Hilbert problem, with a jump supported on an appropriate curve on the complex plane with a finite endpoint at the origin, is used for the study of the corresponding matrix biorthogonal polynomials associated with Laguerre type matrices of weights—which are constructed in terms of a given matrix Pearson equation. First and second order differential systems for the fundamental matrix, solution of the mentioned Riemann–Hilbert problem, are derived. An explicit and general example is presented to illustrate the theoretical results of the work. The non-Abelian extensions of a family of discrete Painlevé IV equations are discussed. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/35075 |
DOI: | 10.3390/math10081205 |
ISSN: | 2227-7390 |
Publisher Version: | https://www.mdpi.com/2227-7390/10/8/1205 |
Appears in Collections: | CIDMA - Artigos CHAG - Artigos |
Files in This Item:
File | Description | Size | Format | |
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mathematics-10-01205-v2.pdf | 383.42 kB | Adobe PDF | View/Open |
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