Uniform asymptotic expansions for the zeros of Bessel functions
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arXiv
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866917664814792704 |
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| author | Dunster, T. M. |
| author_facet | Dunster, T. M. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_16016 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Uniform asymptotic expansions for the zeros of Bessel functions Dunster, T. M. Classical Analysis and ODEs 33C10, 34E05, 34E20 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. |
| title | Uniform asymptotic expansions for the zeros of Bessel functions |
| topic | Classical Analysis and ODEs 33C10, 34E05, 34E20 |
| url | https://arxiv.org/abs/2310.16016 |