English

Potential good reduction of hyperelliptic curves

Number Theory 2022-01-21 v1

Abstract

Let KK be a number field, and g2g \geq 2 a positive integer. We define cK(g)c_K(g) as the smallest integer nn such that there exist infinitely many K\overline{K}-isomorphism classes of genus gg hyperelliptic curves C/KC/K with all Weierstrass points in KK having potentially good reduction outside nn primes in KK. We show that cK(g)>πK,odd(2g)+1c_K(g) > \pi_{K, \textrm{odd}}(2g) + 1, where πK,odd(n)\pi_{K, \textrm{odd}}(n) denotes the number of odd primes in KK with norm no greater than nn, as well as present a summary of various conditional and unconditional results on upper bounds for cK(g)c_K(g).

Keywords

Cite

@article{arxiv.2201.07825,
  title  = {Potential good reduction of hyperelliptic curves},
  author = {Robin Visser},
  journal= {arXiv preprint arXiv:2201.07825},
  year   = {2022}
}

Comments

12 pages

R2 v1 2026-06-24T08:55:42.447Z