极化阿贝尔三重折叠的奇异除子与合系
代数几何
2020-09-02 v3
摘要
我们以性质 和 Koszul 上同调群 的消失为条件,给出了极化阿贝尔三重折叠 具有简单合系的数值条件。我们依赖于 Lazarsfeld-Pareschi-Popa 的约化方法、Newton-Okounkov 体的凸几何、源自 Fujita 猜想工作的伴随反转技巧,以及 Ein-Lazarsfeld-Nakamye 的微分运用。作为副产品,我们在任意高自相交的丰富类中构造了有效除子,其奇异性全部集中在一个阿贝尔子簇上。这可以被视为 Ein-Lazarsfeld 针对 theta 除子所考虑的对偶图景。
引用
@article{arxiv.1803.08780,
title = {Singular divisors and syzygies of polarized abelian threefolds},
author = {Victor Lozovanu},
journal= {arXiv preprint arXiv:1803.08780},
year = {2020}
}
备注
Rewrote the introduction and simplified parts of the exposition. Added work on globally generatedness for polarized abelian threefolds and included this property in the more general setting of studying syzygies