English

Solution of Mumford's second problem

Complex Variables 2022-02-08 v2 Number Theory

Abstract

A complete solution of Mumford's second problem about representation of theta derivatives with rational characteristics in terms of theta constants with rational characteristics is found. An explicit formula for computing such an expression for theta derivative with an arbitrary rational characteristic is derived, and illustrated with examples. Expressions for theta derivatives appear to be homogeneous of degree 33 with respect to theta constants.

Keywords

Cite

@article{arxiv.2108.00130,
  title  = {Solution of Mumford's second problem},
  author = {Julia Bernatska and Yaacov Kopeliovich},
  journal= {arXiv preprint arXiv:2108.00130},
  year   = {2022}
}

Comments

12 pages

R2 v1 2026-06-24T04:42:29.917Z