English

Lifting divisors with imposed ramifications on a generic chain of loops

Algebraic Geometry 2017-10-09 v1

Abstract

Proves that if a curve has totally split reduction and the corresponding skeleton (as a metric graph) is a chain of loops with generic edge lengths, then every divisor on the graph with imposed ramification at the rightmost vertex pp of the skeleton lifts to a divisor class on the curve with the same ramification at some point PP that retracts to pp, extending the work of Cartwright-Jensen-Payne. Gives a positive answer to lifting proper tropical intersections within a polytopal domain in an analytic torus.

Keywords

Cite

@article{arxiv.1710.02288,
  title  = {Lifting divisors with imposed ramifications on a generic chain of loops},
  author = {Xiang He},
  journal= {arXiv preprint arXiv:1710.02288},
  year   = {2017}
}