English

New curves with many points over small finite fields

Number Theory 2014-03-12 v2

Abstract

We use class field theory to search for curves with many rational points over small finite fields. By going through abelian covers of curves of small genus we find a number of new curves. In particular, we settle the question of how many points a curve over GF(2) of genus 17 can have, by finding one with 18 points. The search is aided by computer; in some cases it is exhaustive for this type of curve of genus up to 50.

Keywords

Cite

@article{arxiv.1204.4355,
  title  = {New curves with many points over small finite fields},
  author = {Karl Rökaeus},
  journal= {arXiv preprint arXiv:1204.4355},
  year   = {2014}
}
R2 v1 2026-06-21T20:52:05.340Z