English

A new converse theorem for Borcherds products

Number Theory 2025-12-25 v1

Abstract

We establish a new converse theorem for Borcherds products. Moreover, the injectivity of the Kudla-Millson theta lift is demonstrated in the O(n,2)(n,2) case in greater generality than is currently available in the literature. Both results are derived under the assumption of a single hyperbolic split of the base lattice.

Keywords

Cite

@article{arxiv.2512.20701,
  title  = {A new converse theorem for Borcherds products},
  author = {Ingmar Metzler},
  journal= {arXiv preprint arXiv:2512.20701},
  year   = {2025}
}

Comments

27 pages, 1 figure

R2 v1 2026-07-01T08:39:09.509Z