English

Well-poised generation of Ap\'ery-like recursions

Number Theory 2007-05-23 v2 Classical Analysis and ODEs

Abstract

The idea to use classical hypergeometric series and, in particular, well-poised hypergeometric series in diophantine problems of the values of the polylogarithms has led to several novelties in number theory and neighbouring areas of mathematics. Here we present a systematic approach to derive second-order polynomial recursions for approximations to some values of the Lerch zeta function, depending on the fixed (but not necessarily real) parameter α\alpha satisfying the condition (α)<1\Re(\alpha)<1. Substituting α=0\alpha=0 into the resulting recurrence equations produces the famous recursions for rational approximations to ζ(2)\zeta(2), ζ(3)\zeta(3) due to Ap\'ery, as well as the known recursion for rational approximations to ζ(4)\zeta(4). Multiple integral representations for solutions of the constructed recurrences are also given.

Cite

@article{arxiv.math/0307058,
  title  = {Well-poised generation of Ap\'ery-like recursions},
  author = {Wadim Zudilin},
  journal= {arXiv preprint arXiv:math/0307058},
  year   = {2007}
}

Comments

8 pages; to appear in the Proceedings of the 7th OPSFA (Copenhagen, 18--22 August 2003)