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arXiv 1202.3199math.DGmath.CV
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具有正则无穷奇异性的Kähler-里奇流的坍缩率

The Collapsing Rate of the Kähler-Ricci Flow with Regular Infinite Time Singularity

Frederick Tsz-Ho Fong, Zhou Zhang

摘要:

研究了紧致Kaehler流形X上的Kaehler-里奇流的坍缩行为,其中X上的全纯浸入X -> S来自其标准类,其中S是满足dim S < dim X的Kaehler流形.我们证明了流度规的退化速率恰好与上同调信息所预测的e^{-t}相同,因此纤维在最佳速率直径~ e^{-t/2}处坍缩。因此,它导致一些分析和几何扩展的正常情况下宋田的作品椭圆和卡-丘纤维化。它的适用性,一般的Calabi-Yau纤维与可能的奇异纤维也将讨论在局部意义。

英文摘要:

We study the collapsing behavior of the Kaehler-Ricci flow on a compact Kaehler manifold X admitting a holomorphic submersion X -> S coming from its canonical class, where S is a Kaehler manifold with dim S < dim X. We show that the flow metric degenerates at exactly the rate of e^{-t} as predicted by the cohomology information, and so the fibers collapse at the optimal rate diameter ~ e^{-t/2}. Consequently, it leads to some analytic and geometric extensions to the regular case of Song-Tian's works on elliptic and Calabi-Yau fibrations. Its applicability to general Calabi-Yau fibrations with possibly singular fibers will also be discussed in local sense.

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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