期刊
ADVANCES IN APPLIED MATHEMATICS
卷 136, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.aam.2022.102322
关键词
Orthogonal polynomials; Bispectral orthogonal polynomials; Recurrence relations; Krall polynomials; Jacobi polynomials
This paper studies the bispectrality of Jacobi type polynomials and proves that they satisfy higher-order recurrence relations. It also discovers that the Krall-Jacobi families are the only Jacobi type polynomials that are orthogonal with respect to a certain measure.
We study the bispectrality of Jacobi type polynomials, which are eigenfunctions of higher-order differential operators and can be defined by taking suitable linear combinations of a fixed number of consecutive Jacobi polynomials. Jacobi type polynomials include, as particular cases, the Krall-Jacobi polynomials. As the main results we prove that the Jacobi type polynomials always satisfy higher-order recurrence relations (i.e., they are bispectral). We also prove that the Krall-Jacobi families are the only Jacobi type polynomials which are orthogonal with respect to a measure on the real line. (c) 2022 Elsevier Inc. All rights reserved.
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