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arXiv 2402.08485math.NT
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关于与Heegner数163相关的一类Ramanujan型级数

On a Ramanujan-type series associated with the Heegner number 163

John M. Campbell

AI总结:

本文利用Chudnovsky兄弟公式和Borwein公式的解析延拓,证明了Bagis和Glasser提出的与Heegner数163相关的一级Ramanujan型级数猜想,并作为副产品得到了一个推广Chudnovsky算法的1/π无限族级数。

摘要:

2013年,Bagis和Glasser使用Wolfram NumberTheory包与Recognize命令,结合涉及椭圆lambda函数与椭圆alpha函数的数值估计,提出了一个猜想性的Ramanujan型级数,该级数与判别式为d=163且类数h(-d)=1的二次型相关。鉴于Chudnovsky-Chudnovsky公式与Heegner数d=163之间的联系(使得Q(√-d)的类数为1),这一被猜想的级数为一级且各项为正,令人回想起Chudnovsky兄弟同级且交错符号的级数。我们通过证明λ*(163)和α(163)的求值结果,证明了Bagis和Glasser的猜想,这些求值结果是我们利用Chudnovsky兄弟公式,结合Borwein兄弟关于一级Ramanujan型级数公式的解析延拓推导得出的。作为我们方法的副产品,我们得到了一个关于1/π的无限族Ramanujan型级数,推广了Chudnovsky算法。

英文摘要:

Using the Wolfram NumberTheory package and the Recognize command, together with numerical estimates involving the elliptic lambda and elliptic alpha functions, Bagis and Glasser, in 2013, introduced a conjectural Ramanujan-type series related to the class number $h(-d) = 1$ for a quadratic form with discriminant $d = 163$. This conjectured series is of level one and has positive terms, and recalls the Chudnovsky brothers' alternating series of the same level, given the connection between the Chudnovsky-Chudnovsky formula and the Heegner number $d = 163$ such that $\mathbb{Q}\left( \sqrt{-d} \right)$ has class number one. We prove Bagis and Glasser's conjecture by proving evaluations for $λ^{\ast}(163)$ and $α(163)$, which we derive using the Chudnovsky brothers' formula together with the analytic continuation of a formula due to the Borwein brothers for Ramanujan-type series of level one. As a byproduct of our method, we obtain an infinite family of Ramanujan-type series for $\frac{1}π$ generalizing the Chudnovsky algorithm.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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