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Asymptotic expansion of the krawtchouk polynomials and their zeros

  • Wei-Yuan Qiu
  • , Roderick Wong

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

Abstract

Let formula be the Krawtchouk polynomials and µ = N/n. An asymptotic expansion is derived for formula, when x is a fixed number. This expansion holds uniformly for µ in [1, ∞), and is given in terms of the confluent hypergeometric functions. Asymptotic approximations are also obtained for the zeros of formula in various cases depending on the values of p, q and µ. © 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
Pages985-1022
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 research of the first author is partially supported by Liu Bie Ju Center for Mathematics Sciences and by Chinese NNSF grant No. 10271031. The research of the second author is partially supported by grants from the Research Grant Council of Hong Kong.

Research Keywords

  • Asymptotic expansions
  • Confluent hypergeometric functions
  • Krawtchouk polynomials
  • Zeros

RGC Funding Information

  • RGC-funded

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