English

An addition formula for the Jacobian theta function with applications

Number Theory 2018-06-20 v3

Abstract

Liu established an addition formula for the Jacobian theta function by using the theory of elliptic functions. From this addition formula he obtained the Ramanujan cubic theta function identity, Winquist's identity, a theta function identities with five parameters, and many other interesting theta function identities. In this paper we will give an addition formula for the Jacobian theta function which is equivalent to Liu's addition formula. Based on this formula we deduce some known theta function identities as well as new identities. From these identities we shall establish certain new series expansions for

Keywords

Cite

@article{arxiv.1804.00580,
  title  = {An addition formula for the Jacobian theta function with applications},
  author = {Bing He and Hongcun Zhai},
  journal= {arXiv preprint arXiv:1804.00580},
  year   = {2018}
}

Comments

21 pages. This is a joint work with Dr. Zhai. Any critical comments are always welcome

R2 v1 2026-06-23T01:11:42.061Z