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Solution of difference equations by use of the τ-method
Journal article   Open access   Peer reviewed

Solution of difference equations by use of the τ-method

Yudell L Luke, Jet Wimp and Bing Y Ting
Journal of approximation theory, v 32(3), pp 211-225
1981
url
https://doi.org/10.1016/0021-9045(81)90116-7View
Published, Version of Record (VoR)Open Access (Publisher-Specific) Open

Abstract

In the field of differential equations, the τ-method introduced by C. Lanczos has generated considerable interest because of its novel philosophy. That is, rather than attempting to solve an exact equation approximately, it solves an approximate equation exactly. The τ-method when applied to differential equations has many striking properties. In this paper, the concept is applied to difference equations. For a model we use the equation satisfied by the reciprocal of the gamma function, 1/ Γ( z + 1). As a consequence of the analysis, we show how to generate the Taylor series coefficients in the expansion of this function about z = 0. In particular, a novel technique is provided to compute Euler's constant.

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Collaboration types
Domestic collaboration
Web of Science research areas
Mathematics
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