关于某些具有十六阶自同构的 K3 曲面
代数几何
2021-03-04 v3
摘要
我们考虑皮卡秩为 14 且容许阶为 16 的纯非辛自同构的 K3 曲面。该自同构作用于带整数系数的第二上同调群,我们计算该作用的不变子格。我们表明所有这些 K3 曲面都容许椭圆纤维化,并通过使用椭圆纤维化的特殊曲线以几何方式计算不变格。当研究格极化 K3 曲面的模空间与镜像对称时,这些格的计算起着重要作用。
引用
@article{arxiv.1912.09803,
title = {On some K3 surfaces with order sixteen automorphism},
author = {Paola Comparin and Nathan Priddis and Alessandra Sarti},
journal= {arXiv preprint arXiv:1912.09803},
year = {2021}
}
备注
25 pages, comments are welcome, in the current version, we have added a proof that the automorphisms of order 16 on the third surface are indeed unique (up to isomorphism) and corrected some errors in the previous version