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arXiv 1506.03421math.DGmath.AP
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正弯曲里奇流的几乎刚性和消亡时

Almost-rigidity and the extinction time of positively curved Ricci flows

Richard H. Bamler, Davi Maximo

摘要:

证明了几乎具有最大消亡时的里奇流在与$\mathbb{R}^{2}$相交时具有正的迷向曲率的条件下一定是近圆流.作为应用,我们证明了$S^{3}$和$RP^{3}$上具有几乎最大宽度的正曲度量必须是近圆的.

英文摘要:

We prove that Ricci flows with almost maximal extinction time must be nearly round, provided that they have positive isotropic curvature when crossed with $\mathbb{R}^{2}$. As an application, we show that positively curved metrics on $S^{3}$ and $RP^{3}$ with almost maximal width must be nearly round.

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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