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On the convergence of certain indefinite theta series

Number Theory 2024-11-08 v1

Abstract

We give an elementary proof of the convergence of indefinite theta series associated to an inner space of signature (n,2)(n,2) conjectured in the work of Alexandrov,Banerjee,Manschot and Pioline (2018) and show that the incidence conditions are also necessary for the convergence.

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Cite

@article{arxiv.2302.14761,
  title  = {On the convergence of certain indefinite theta series},
  author = {Xiaoyu Zhang},
  journal= {arXiv preprint arXiv:2302.14761},
  year   = {2024}
}

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