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arXiv math/0602423math.DG
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复几何上的复曲面反self-dual 4-流形

Toric anti-self-dual 4-manifolds via complex geometry

Simon K. Donaldson, Joel Fine

摘要:

本文利用扭量对应给出了扭量空间上复曲面反自对偶共形类的芽与由诱导作用决定的某些全纯数据之间的一一对应。从全纯数据恢复度量导致经典问题的规定0-上链的Cech上边界的椭圆曲线覆盖的两个环。类承认卡勒代表的描述,每个这样的类包含一个圈的卡勒指标。这给出了纯量平坦卡勒曲面的新局部例子,并概括了乔伊斯的工作,乔伊斯考虑了与环面作用量正交的分布是可积的情况。

英文摘要:

Using the twistor correspondence, this article gives a one-to-one correspondence between germs of toric anti-self-dual conformal classes and certain holomorphic data determined by the induced action on twistor space. Recovering the metric from the holomorphic data leads to the classical problem of prescribing the Cech coboundary of 0-cochains on an elliptic curve covered by two annuli. The classes admitting Kahler representatives are described; each such class contains a circle of Kahler metrics. This gives new local examples of scalar-flat Kahler surfaces and generalises work of Joyce who considered the case where the distribution orthogonal to the torus action is integrable.

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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