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arXiv 2104.14705math.NTmath.COmath.CV
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八次θ函数的一个普适恒等式及其应用

A universal identity for theta functions of degree eight and applications

Zhi-Guo Liu

摘要:

在此之前,我们证明了八次θ函数的一个恒等式,并讨论了它的几个应用。这个恒等式是Weierstrass σ函数的加法公式的自然扩张。在本文中,我们将使用这个恒等式来重新审视我们在过去二十年中在θ函数恒等式方面的工作。从这个恒等式出发,可以很容易地导出几百个关于椭圆模函数的经典和新的结果。从本质上讲,这个一般的θ函数恒等式是一个θ恒等式生成机。我们的研究表明,Jacobi,Kiepert,Ramanujan和Weierstrass等人关于椭圆模函数的许多著名的结果具有不同的外观,实际上共享一个共同的来源.这篇论文也可以看作是我过去关于θ函数恒等式工作的总结。还提出了一个猜想。

英文摘要:

Previously, we proved an identity for theta functions of degree eight, and several applications of it were also discussed. This identity is a natural extension of the addition formula for the Weierstrass sigma-function. In this paper we will use this identity to reexamine our work in theta function identities in the past two decades. Hundreds of results about elliptic modular functions, both classical and new, are derived from this identity with ease. Essentially, this general theta function identity is a theta identities generating machine. Our investigation shows that many well-known results about elliptic modular functions with different appearances due to Jacobi, Kiepert, Ramanujan and Weierstrass among others, actually share a common source. This paper can also be seen as a summary of my past work on theta function identities. A conjecture is also proposed.

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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