多二次域类群 2-挠率的一个锐上界
数论
2021-03-09 v1
摘要
设 为 的多二次扩张,令 为其窄类群。近来,作者 \cite{KP} 给出了仅依 的次数与分歧素数个数表示的 的界。本工作中我们证明该界在大量情形下是锐的。此外,我们将此推广至射线类群。
引用
@article{arxiv.2009.08399,
title = {A sharp upper bound for the $2$-torsion of class groups of multiquadratic fields},
author = {Peter Koymans and Carlo Pagano},
journal= {arXiv preprint arXiv:2009.08399},
year = {2021}
}
备注
Some of the results in this paper were originally part of arXiv:1909.13871, which is now split in two parts