Minimal Weierstrass models and regular models of hyperelliptic curves
Abstract
Let be a hyperelliptic curve of genus over a discrete valuation field with perfect residue field. We study the minimal Weierstrass models of . When there is more than one such model, we find interesting properties on the minimal regular model and the canonical model of . For curves of genus , we characterize the existence of the stable reduction in terms of the minimal Weierstrass models. When there is more than one such model, we can compute the Euler factor of and a volume form of the N\'eron model of , using two specific minimal Weierstrass models.
Cite
@article{arxiv.2603.19065,
title = {Minimal Weierstrass models and regular models of hyperelliptic curves},
author = {Qing Liu},
journal= {arXiv preprint arXiv:2603.19065},
year = {2026}
}
Comments
Add {\S}1.7 on stably minimal Weierstrass models; more details for the extended Tate's algorithm {\S}2.2; Add {\S}3.5, {\S}3.6 on Tamagawa number and conductor of Jac(C). Minor changes in the rest of the paper