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

preprint2014arXivOpen access

Abstract

In a recent work [JNT \textbf{129}, 2154 (2009)], Gun and co-workers have claimed that the number  log⁡Γ(x)+log⁡Γ(1−x) \,\log{Γ(x)} + \log{Γ(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  log⁡π\,\logπ, a number whose irrationality is not proved yet. This has an interesting consequence for the transcendence of the product  π⋅e\,π\cdot e, another number whose irrationality remains unproven.

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