English

Curves with sharp Chabauty-Coleman bound

Number Theory 2020-11-26 v2

Abstract

We construct curves of each genus g2g\geq 2 for which Coleman's effective Chabauty bound is sharp and Coleman's theorem can be applied to determine rational points if the rank condition is satisfied. We give numerous examples of genus two and rank one curves for which Coleman's bound is sharp. Based on one of those curves, we construct an example of a curve of genus five whose rational points are determined using the descent method together with Coleman's theorem.

Keywords

Cite

@article{arxiv.2009.01084,
  title  = {Curves with sharp Chabauty-Coleman bound},
  author = {Stevan Gajović},
  journal= {arXiv preprint arXiv:2009.01084},
  year   = {2020}
}

Comments

24 pages

R2 v1 2026-06-23T18:16:08.253Z