Orthogonal Polynomials with Ultra-Exponential Weight Functions: An Explicit Solution to the Ditkin-Prudnikov Problem

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Yakubovich, SB (Autor) FCUP

Revista

Título: Constructive Approximation

Vol. 53

Páginas: 1-38

ISSN: 0176-4276

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 4 Citações

Scopus - 4 Citações

Outras Informações

ID Authenticus: P-00T-9D4

DOI: 10.1007/s00365-020-09523-0

Abstract (EN): New sequences of orthogonal polynomials with ultra-exponential weight functions are discovered. In particular, we give an explicit solution to the Ditkin-Prudnikov problem (1966). The 3-term recurrence relations, explicit representations, generating functions and Rodrigues-type formulae are derived. The method is based on differential properties of the involved special functions and their representations in terms of the Mellin-Barnes and Laplace integrals. A notion of the composition polynomial orthogonality is introduced. The corresponding advantages of this orthogonality to discover new sequences of polynomials and their relations to the corresponding multiple orthogonal polynomial ensembles are shown.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 38