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arXiv 2603.06975math.AG
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关于正特征面上消失定理和博戈莫洛夫不等式

On Vanishing Theorems and Bogomolov's Inequality on Surfaces in Positive Characteristic

Queensborough Community College of CUNY(纽约市立大学皇后社区学院);CUNY Graduate Center(纽约市立大学研究生院);Capital Normal University(首都师范大学)

Fei Ye, Zhixian Zhu

AI总结:

本文研究正特征面上博戈莫洛夫不等式与miyaoka-sakai定理的等价性,并推导出相关消失定理及fujita猜想的reider类型结果。

摘要:

本文研究了正特征面上博戈莫洛夫不稳定性定理与miyaoka-sakai定理之间的等价性。我们证明博戈莫洛夫不稳定性定理可以从miyaoka-sakai定理推导出来。反之,它推导出miyaoka-sakai定理的一个部分版本,该版本缺少消失结论。这个部分版本仍足以推导mumford-ramanujam消失定理。此外,我们识别出一类正特征面上的表面,其中miyaoka-sakai定理(或其较弱版本),或kawamata-viehweg消失定理成立。特别是,我们为平滑的del pezzo表面提供了kawamata-viehweg消失定理的新证明。作为miyaoka-sakai定理的应用,我们获得了与reider类型相关的关于fujita猜想的结果。

英文摘要:

In this paper, we study the equivalence between Bogomolov's instability theorem and the Miyaoka-Sakai theorem on surfaces in positive characteristic. We show that Bogomolov's instability theorem can be derived from Miyaoka-Sakai theorem. Conversely, it implies a partial version of the Miyaoka-Sakai theorem that lacks the vanishing conclusion. This partial version is still sufficient to deduce the Mumford-Ramanujam vanishing theorem. Additionally, we identify a class of surfaces in positive characteristic for which the Miyaoka-Sakai theorem (or a weaker variant), or the Kawamata-Viehweg vanishing theorem holds. In particular, we present a new proof of the Kawamata-Viehweg vanishing theorem on smooth del Pezzo surfaces. As an application of the Miyaoka-Sakai theorem, we obtain Reider-type results concerning Fujita's conjecture.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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