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arXiv 0812.2460math.DG
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热核界、古$κ$解和庞加莱猜测

Heat kernel bounds, ancient $κ$ solutions and the Poincaré conjecture

Qi S. Zhang

摘要:

建立了与里奇流的三维古$κ$解相关的共轭热方程的热核的Gauss型上界.作为应用,使用与热核相关的$W$熵,我们给出了佩雷尔曼对这些古老解的向后极限的分类的不同且更短的证明。目前的文件连同\cite{Z:2}和一个不同的证明普遍的非塌陷由于陈和朱\cite{ChZ:1}导致一个简化的证明庞加莱猜测没有使用减少的距离和减少的体积。

英文摘要:

We establish certain Gaussian type upper bound for the heat kernel of the conjugate heat equation associated with 3 dimensional ancient $κ$ solutions to the Ricci flow. As an application, using the $W$ entropy associated with the heat kernel, we give a different and shorter proof of Perelman's classification of backward limits of these ancient solutions. The current paper together with \cite{Z:2} and a different proof of universal noncollapsing due to Chen and Zhu \cite{ChZ:1} lead to a simplified proof of the Poincaré conjecture without using reduced distance and reduced volume.

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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