English

Reduction of Hyperelliptic Curves in Residue Characteristic 2

Algebraic Geometry 2024-10-25 v2 Number Theory

Abstract

Consider a hyperelliptic curve of genus gg over a field KK of characteristic zero. After extending KK we can view it as a marked curve with its 2g+22g+2 Weierstrass points. We present an explicit algorithm to compute the stable reduction of this marked curve for a valuation of residue characteristic 22 over a finite extension of KK. In the cases g2g\le2 we work out relatively simple conditions for the structure of this reduction.

Keywords

Cite

@article{arxiv.2404.14214,
  title  = {Reduction of Hyperelliptic Curves in Residue Characteristic 2},
  author = {Tim Gehrunger and Richard Pink},
  journal= {arXiv preprint arXiv:2404.14214},
  year   = {2024}
}

Comments

63 pages; typos fixed; comments welcome