对数Γ函数在有理元处超越的可能例外
On the possible exceptions for the transcendence of the log-gamma function at rational entries
摘要:
在最近的工作[JNT \textbf{129},2154(2009)]中,Gun和同事声称数$\,\log{Γ(x)} + \log{Γ(1-x)}\,$,$x$是介于$0$和$1$之间的有理数,是超越的,至多有\emph{one}可能的例外,但在该工作中给出的证明是\emph{incorrect}。在本文中,我指出了他们犯的错误,并提出了一个定理,该定理建立了这些数的超越性,最多有\emph{two}可能的例外。因此,我利用这个函数的反射性质建立了一个超越$\,\logπ$的准则,这个数的非理性还没有得到证明。这对乘积$\,π\cdot e$的超越性有一个有趣的结果,这是另一个其不合理性尚未被证明的数。
英文摘要:
In a recent work [JNT \textbf{129}, 2154 (2009)], Gun and co-workers have claimed that the number $\,\log{Γ(x)} + \log{Γ(1-x)}\,$, $x$ being a rational number between $0$ and $1$, 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 $\,\logπ$, a number whose irrationality is not proved yet. This has an interesting consequence for the transcendence of the product $\,π\cdot e$, another number whose irrationality remains unproven.
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