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arXiv 2107.01419math.DG
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Nash熵有界的古里奇流的一致Sobolev不等式

A uniform Sobolev inequality for ancient Ricci flows with bounded Nash entropy

Pak-Yeung Chan, Zilu Ma, Yongjia Zhang

摘要:

本文是[CMZ 21]的续篇。我们将证明具有一致有界Nash熵的古里奇流也必须具有一致有界的$ν$ -泛函。因此,在这样一个古老的解决方案有一致的对数Sobolev和Sobolev不等式。我们强调,只要[Bam 20 c]中的理论是有效的,特别是当基础流形是闭的时,本文中的主要定理是正确的。

英文摘要:

This note is a continuation of [CMZ21]. We shall show that an ancient Ricci flow with uniformly bounded Nash entropy must also have uniformly bounded $ν$-functional. Consequently, on such an ancient solution there are uniform logarithmic Sobolev and Sobolev inequalities. We emphasize that the main theorem in this paper is true so long as the theory in [Bam20c] is valid, and in particular, when the underlying manifold is closed.

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