English

Constructing genus 3 hyperelliptic Jacobians with CM

Number Theory 2019-02-20 v2 Algebraic Geometry

Abstract

Given a sextic CM field KK, we give an explicit method for finding all genus 3 hyperelliptic curves defined over C\mathbb{C} whose Jacobians are simple and have complex multiplication by the maximal order of this field, via an approximation of their Rosenhain invariants. Building on the work of Weng, we give an algorithm which works in complete generality, for any CM sextic field KK, and computes minimal polynomials of the Rosenhain invariants for any period matrix of the Jacobian. This algorithm can be used to generate genus 3 hyperelliptic curves over a finite field Fp\mathbb{F}_p with a given zeta function by finding roots of the Rosenhain minimal polynomials modulo pp.

Keywords

Cite

@article{arxiv.1603.03832,
  title  = {Constructing genus 3 hyperelliptic Jacobians with CM},
  author = {Jennifer S. Balakrishnan and Sorina Ionica and Kristin Lauter and Christelle Vincent},
  journal= {arXiv preprint arXiv:1603.03832},
  year   = {2019}
}

Comments

20 pages; to appear in ANTS XII

R2 v1 2026-06-22T13:09:19.127Z