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arXiv 2104.12412math.NT
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论拉马努金$π$级数的优美性

On the elegance of Ramanujan's series for $π$

Chieh-Lei Wong

摘要:

重新提出了传统的证明Srinivasa拉马努金自己最喜欢的系列为倒数的$π$:\begin{equation}\frac{1}π = \frac{\sqrt{8}}{9801} \sum_{n=0}^{+\infty} \frac{(4n)!}{(n!)^4} \frac{1103 + 26390n}{396^{4n}} \; \text{,}\end{equation}以及其他几个例子拉马努金的无穷级数。事实上,这些公式的推导涉及到经典函数和模函数恒等式的专门知识。

英文摘要:

Re presenting the traditional proof of Srinivasa Ramanujan's own favorite series for the reciprocal of $π$ :\begin{equation}\frac{1}π = \frac{\sqrt{8}}{9801} \sum_{n=0}^{+\infty} \frac{(4n)!}{(n!)^4} \frac{1103 + 26390n}{396^{4n}} \; \text{,}\end{equation}as well as several other examples of Ramanujan's infinite series. As a matter of fact, the derivation of such formulae has involved specialized knowledge of identities of classical functions and modular functions.

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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