Riemann–Hilbert problem and matrix biorthogonal polynomials

Recently the Riemann-Hilbert problem, with jumps supported on appropriate curves in the complex plane, has been presented for matrix biorthogonal polynomials, in particular non-Abelian Hermite matrix biorthogonal polynomials in the real line, understood as those whose matrix of weights is a solution...

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Detalhes bibliográficos
Autor principal: Branquinho, Amílcar (author)
Outros Autores: Foulquié-Moreno, Ana (author), Mañas-Baena, Manuel (author)
Formato: bookPart
Idioma:eng
Publicado em: 2022
Assuntos:
Texto completo:http://hdl.handle.net/10773/33034
País:Portugal
Oai:oai:ria.ua.pt:10773/33034
Descrição
Resumo:Recently the Riemann-Hilbert problem, with jumps supported on appropriate curves in the complex plane, has been presented for matrix biorthogonal polynomials, in particular non-Abelian Hermite matrix biorthogonal polynomials in the real line, understood as those whose matrix of weights is a solution of a Sylvester type Pearson equation with coe cients first order matrix polynomials. We will explore this discussion, present some achievements and consider some new examples of weights for matrix biorthogonal polynomials.