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arXiv 0909.0772math.AG
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例外奇异Q-同调平面

Exceptional singular Q-homology planes

Karol Palka

摘要:

本文研究了具有非一般光滑轨迹的奇异Q-非循环曲面。我们证明了如果奇点是拓扑有理的,则光滑轨迹是C^1-或C*-直纹的,或者曲面同构于Kodaira维数为零的两个例外曲面之一。对于这两个例外的表面Kodaira维数的光滑轨迹是零和奇异轨迹由一个独特的点的类型A1和A2分别。这些曲面可以从射影平面上的两种经典的直线构型开始构造:对偶Hesse构型和完全四点形。

英文摘要:

We consider singular Q-acyclic surfaces with smooth locus of non-general type. We prove that if the singularities are topologically rational then the smooth locus is C^1- or C*-ruled or the surface is up to isomorphism one of two exceptional surfaces of Kodaira dimension zero. For both exceptional surfaces the Kodaira dimension of the smooth locus is zero and the singular locus consists of a unique point of type A1 and A2 respectively. These surfaces can be constructed starting from two classical configurations of lines on the projective plane: the dual Hesse configuration and the complete quadrangle.

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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