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arXiv 2109.03545math.AG
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普通K3曲面的扭曲Tame Fourier-Mukai伙伴数

Counting Twisted Tame Fourier-Mukai Partners of an Ordinary K3 Surface

Tanya Kaushal Srivastava, Sofia Tirabassi

摘要:

本文证明了正特征的代数闭域上的Tame扭曲K3曲面只有1/2个Tame扭曲Fourier-Mukai伙伴,并给出了当有普通Tame无扭曲K3曲面时的计数公式.我们还证明了有限高的K3曲面的每一个驯服的扭曲Fourier Mukai伙伴都是其上扭曲层的模空间。

英文摘要:

In this article, we prove that a tame twisted K3 surface over an algebraically closed field of positive characteristic has only finitely many tame twisted Fourier-Mukai partners and we give a counting formula in case we have an ordinary tame untwisted K3 surface. We also show that every tame twisted Fourier Mukai partner of a K3 surface of finite height is a moduli space of twisted sheaves over it.

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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