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Mathematics > Classical Analysis and ODEs

Title: Uniform asymptotic expansions for the zeros of Bessel functions

Authors: T. M. Dunster
Abstract: Reformulated uniform asymptotic expansions are derived for ordinary differential equations having a large parameter and a simple turning point. These involve Airy functions, but not their derivatives, unlike traditional asymptotic expansions. From these, asymptotic expansions are derived for the zeros of Bessel functions that are valid for large positive values of the order, uniformly valid for all the zeros. The coefficients in the expansions are explicitly given elementary functions, and similar expansions are derived for the zeros of the derivatives of Bessel functions.
Subjects: Classical Analysis and ODEs (math.CA)
MSC classes: 33C10, 34E05, 34E20
Cite as: arXiv:2310.16016 [math.CA]
  (or arXiv:2310.16016v3 [math.CA] for this version)

Submission history

From: T. M. Dunster [view email]
[v1] Tue, 24 Oct 2023 17:21:38 GMT (508kb)
[v2] Fri, 24 Nov 2023 21:04:17 GMT (508kb)
[v3] Mon, 13 May 2024 20:50:02 GMT (509kb)

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