四阶循环覆盖的精炼局部提升问题
代数几何
2023-09-19 v4 数论
摘要
设是代数闭域(特征为)上一条曲线的-覆盖,是的-子覆盖到一个特征为零的完全离散赋值环的一个\emph{良好}提升。我们证明存在的一个有限扩张(由确定),以及到的一个提升,使得其-子覆盖同构于。该结果给出了一类Sa{"i}di精炼提升猜想成立的非平凡循环覆盖族。此外,本稿展示了一些现象,或可对数以狂分歧Galois覆盖为参数的神秘模空间有所启发。
关键词
引用
@article{arxiv.2107.01780,
title = {The refined local lifting problem for cyclic covers of order four},
author = {Huy Dang},
journal= {arXiv preprint arXiv:2107.01780},
year = {2023}
}
备注
There were some gaps in section 4 of the previous version. The current result is now weaker than a known one but uses a different approach. We may consider replacing this manuscript with another one that yields a stronger result