关于非简单阿贝尔簇的 Seshadri 常数
代数几何
2022-05-27 v4
摘要
我们证明了:若极化阿贝尔簇的 Seshadri 常数相对于其度数较小,或它包含一个度数足够小的阿贝尔除子,则该 Seshadri 常数等于其阿贝尔子簇的 Seshadri 常数。作为这些结果的应用,我们证明了若极化阿贝尔曲面的 Seshadri 常数足够小,则其由唯一的 Seshadri 曲线算出。作为另一应用,我们计算了某些包含主极化阿贝尔曲面的非简单极化阿贝尔三维簇的 Seshadri 常数。
引用
@article{arxiv.1909.13461,
title = {On Seshadri constants of non-simple abelian varieties},
author = {Rikito Ohta},
journal= {arXiv preprint arXiv:1909.13461},
year = {2022}
}
备注
Section 2 in the previous version are omitted and its contents are included in the introduction in Section 1. Some trivial results are omitted from the applications in Section 3. final version