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Uniform asymptotic expansions for meixner polynomials

  • X. S. Jin
  • , R. Wong

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 12 - Chapter in an edited book (Author)peer-review

Abstract

Meixner polynomials mn(x; β, c) form a postive-definite orthogonal system on the positive real line x > 0 with respect to a distribution step function whose jumps are formula Unlike classical orthogonal polynomials, they do not satisfy a second-order linear differential equation. In this paper, we derive two infinite asymptotic expansions for mn(nα β, c) as n → ∞ One holds uniformly for 0 > ɛ ≤ α > 1 + a, and the other holds uniformly for 1 - b > α > M > ∞, where a and b are two small positive quantities. Both expansions involve the parabolic cylinder function and its derivative. Our results include all five asymptotic formulas recently given by W. M. Y. Goh as special cases. © 2016 by World Scientific Publishing Co. Ptc. Ltd.
Original languageEnglish
Title of host publicationSelected Works Of Roderick S. C. Wong, The (In 3 Volumes)
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages568-605
ISBN (Print)9789814656054
DOIs
Publication statusPublished - 5 Aug 2015

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The authors would like to thank the referee for a careful reading of this paper and several helpful suggestions. This research was partially supported by the Natural Sciences and Engineering Research Council of Canada under grant A7359.

Research Keywords

  • Meixner polynomials
  • Parabolic cylinder function
  • Steepest descent method
  • Uniform asymptotic expansions

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