Discriminant groups of wild cyclic quotient singularities
Algebraic Geometry
2023-05-10 v1
Abstract
Let p be prime. We describe explicitly the resolution of singularities of several families of wild Z/pZ-quotient singularities in dimension two, including families that generalize the quotient singularities of type E_6, E_7, and E_8 from p=2 to arbitrary characteristics. We prove that for odd primes, any power of p can appear as the determinant of the intersection matrix of a wild Z/pZ-quotient singularity. We also provide evidence towards the conjecture that in this situation one may choose the wild action to be ramified precisely at the origin.
Keywords
Cite
@article{arxiv.2101.08090,
title = {Discriminant groups of wild cyclic quotient singularities},
author = {Dino Lorenzini and Stefan Schröer},
journal= {arXiv preprint arXiv:2101.08090},
year = {2023}
}
Comments
44 pages