Tame nodal stacky curves
Algebraic Geometry
2025-10-14 v2
Abstract
In this paper we analyze the properties of tame nodal stacky curves, in particular twisted curves and \textit{doubly-twisted} curves. Our main results are a complete classification of the possible structures of a tame stacky node, along with computations of the Picard and Brauer groups of nodal stacky curves.
Keywords
Cite
@article{arxiv.2509.20629,
title = {Tame nodal stacky curves},
author = {Martin Bishop and William C. Newman},
journal= {arXiv preprint arXiv:2509.20629},
year = {2025}
}
Comments
21 pages. Added the case of separating nodes, and some small revisions