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On functions defined by sums of products of Bessel functions

P A Martin

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Various functions, defined as infinite series of products of Bessel functions of the first kind, are studied. Integral representations are obtained, and then used to deduce asymptotic approximations. Although several methods have been investigated (including power series expansions and integral transforms), methods based on Fourier series emerge as the most useful.


PACS

02.30.Gp Special functions

02.30.Mv Approximations and expansions

02.30.Nw Fourier analysis

02.30.Lt Sequences, series, and summability

02.30.Uu Integral transforms

MSC

40G10 Abel, Borel and power series methods

41A58 Series expansions (e.g. Taylor, Lidstone series, but not Fourier series)

41A60 Asymptotic approximations, asymptotic expansions (steepest descent, etc.) (See also 30E15)

33C10 Bessel and Airy functions, cylinder functions, 0F1

Subjects

Mathematical physics

Dates

Issue 1 (11 January 2008)

Received 28 June 2007, in final form 13 November 2007

Published 12 December 2007



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