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arXiv 2107.08730math.AG
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非闭域上仿射平面的紧化

Compactifications of the affine plane over non-closed fields

Masatomo Sawahara

摘要:

本文给出了特征为零的代数非闭域上含有仿射平面的至多对数正则奇点的秩为1的法向del Pezzo曲面的分类。作为一个应用,我们有一个标准的del Pezzo纤维化的典型奇异性,其通用纤维是不光滑的,包含垂直$\mathbb{A}^2$柱。

英文摘要:

In this article, we give the classification of normal del Pezzo surfaces of rank one with at most log canonical singularities containing the affine plane defined over an algebraically non-closed field of characteristic zero. As an application, we have a criterion for del Pezzo fibrations with canonical singularities whose generic fibers are not smooth to contain vertical $\mathbb{A}^2$-cylinders.

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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