Purely inseparable coverings of rational double points in positive characteristic
Algebraic Geometry
2022-04-11 v3 Commutative Algebra
Abstract
We classify purely inseparable morphisms of degree between rational double points (RDPs) in characteristic . Using such morphisms, we refine a result of Artin that any RDP admits a finite smooth covering.
Keywords
Cite
@article{arxiv.2003.10344,
title = {Purely inseparable coverings of rational double points in positive characteristic},
author = {Yuya Matsumoto},
journal= {arXiv preprint arXiv:2003.10344},
year = {2022}
}
Comments
16 pages, title slightly changed, accepted version