English

Closed points on curves over finite fields

Algebraic Geometry 2023-10-18 v1

Abstract

We are interested in the quantity ρ\rho(q, g) defined as the smallest positive integer such that r \ge ρ\rho(q, g) implies that any absolutely irreducible smooth projective algebraic curve defined over F q of genus g has a closed point of degree r. We provide general upper bounds for this number and its exact value for g = 1, 2 and 3. We also improve the known upper bounds on the number of closed points of degree 2 on a curve.

Keywords

Cite

@article{arxiv.2310.11218,
  title  = {Closed points on curves over finite fields},
  author = {Yves Aubry and Fabien Herbaut and Julien Monaldi},
  journal= {arXiv preprint arXiv:2310.11218},
  year   = {2023}
}
R2 v1 2026-06-28T12:53:16.960Z