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arXiv math/0001118math.AG
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含非有理奇点的正规del Pezzo曲面

Normal del Pezzo surfaces containing a nonrational singularity

Stefan Schroeer

摘要:

在完满域上,对含有非有理奇异点的底数为1的法向del Pezzo曲面进行了分类。它们形成了一个巨大的无限层次;直纹曲面的收缩位于它的顶部。层次的下降取决于初等变换的广义版本。作为一个应用,我确定的结构的二维反正则模型的任意正常的表面。

英文摘要:

Working over a perfect field, I classify normal del Pezzo surfaces with base number one that contain a nonrational singularity. They form a huge infinite hierarchy; contractions of ruled surfaces lie on top of it. Descending the hierarchy hinges on a generalized version of elementary transformations. As an application, I determine the structure of 2-dimensional anticanonical models for arbitrary normal surfaces.

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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