English

Irrationality of $\zeta_q(1)$ and $\zeta_q(2)$

Classical Analysis and ODEs 2013-10-04 v1 Number Theory

Abstract

In this paper we show how one can obtain simultaneous rational approximants for ζq(1)\zeta_q(1) and ζq(2)\zeta_q(2) with a common denominator by means of Hermite-Pade approximation using multiple little q-Jacobi polynomials and we show that properties of these rational approximants prove that 1, ζq(1)\zeta_q(1), ζq(2)\zeta_q(2) are linearly independent over the rationals. In particular this implies that ζq(1)\zeta_q(1) and ζq(2)\zeta_q(2) are irrational. Furthermore we give an upper bound for the measure of irrationality.

Keywords

Cite

@article{arxiv.math/0604312,
  title  = {Irrationality of $\zeta_q(1)$ and $\zeta_q(2)$},
  author = {Kelly Postelmans and Walter Van Assche},
  journal= {arXiv preprint arXiv:math/0604312},
  year   = {2013}
}