English

On the possible exceptions for the transcendence of the log-gamma function at rational entries

Number Theory 2014-02-06 v3

Abstract

In a recent work [JNT \textbf{129}, 2154 (2009)], Gun and co-workers have claimed that the number logΓ(x)+logΓ(1x)\,\log{\Gamma(x)} + \log{\Gamma(1-x)}\,, xx being a rational number between 00 and 11, is transcendental with at most \emph{one} possible exception, but the proof presented there in that work is \emph{incorrect}. Here in this paper, I point out the mistake they committed and I present a theorem that establishes the transcendence of those numbers with at most \emph{two} possible exceptions. As a consequence, I make use of the reflection property of this function to establish a criteria for the transcendence of logπ\,\log{\pi}, a number whose irrationality is not proved yet. This has an interesting consequence for the transcendence of the product πe\,\pi \cdot e, another number whose irrationality remains unproven.

Keywords

Cite

@article{arxiv.0908.3253,
  title  = {On the possible exceptions for the transcendence of the log-gamma function at rational entries},
  author = {F. M. S. Lima},
  journal= {arXiv preprint arXiv:0908.3253},
  year   = {2014}
}

Comments

7 pages, 1 figure. Fully revised and shortened (02/05/2014)