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Sharp error bounds for turning point expansions

Abstract: Computable and sharp error bounds are derived for asymptotic expansions for linear differential equations having a simple turning point. The expansions involve Airy functions and slowly varying coefficient functions. The sharpness of the bounds is illustrated numerically with an application to Bessel functions of large order

 Authorship: Dunster T.M., Gil A., Segura J.,

 Fuente: Journal of Classical Analysis, 2021, 18(1), 49-81

 Publisher: Element

 Publication date: 01/01/2021

 No. of pages: 33

 Publication type: Article

 DOI: 10.7153/jca-2021-18-05

 ISSN: 1848-5987,1848-5979

 Spanish project: PGC2018-098279-B-I00

 Publication Url: http://jca.ele-math.com/18-05/Sharp-error-bounds-for-turning-point-expansions

Authorship

DUNSTER, T. M.