English

An algebraic characterization of the Kronecker function

Number Theory 2019-09-24 v4

Abstract

We characterize the generating series of extended period polynomials of normalized Hecke eigenforms for PSL2(Z)\operatorname{PSL}_2(\mathbb Z) studied by Zagier in terms of the period relations and existence of a suitable factorization. For this we prove a characterization of the Kronecker function as the `fundamental solution' to the Fay identity.

Cite

@article{arxiv.1806.04948,
  title  = {An algebraic characterization of the Kronecker function},
  author = {Nils Matthes},
  journal= {arXiv preprint arXiv:1806.04948},
  year   = {2019}
}

Comments

11 pages, final version, minor differences in abstract and acknowledgements compared to published version

R2 v1 2026-06-23T02:28:27.106Z