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arXiv 2012.04430math.DGmath.AP
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具有任意初始度量边界流形上的里奇流

Ricci Flow on Manifolds with Boundary with Arbitrary Initial Metric

Tsz-Kiu Aaron Chow

摘要:

本文研究了带边界流形上的里奇流。在本文的第一部分中,我们证明了了解的短时存在唯一性,其中边界在正时间内瞬时变为脐点。在本文的第二部分,我们证明了我们在第一部分中构造的流保持自然边界条件。更具体地说,如果初始度量具有凸边界,则流保持正曲率算子和PIC 1,PIC 2条件。此外,如果初始度量具有双凸边界,则流保持PIC条件。

英文摘要:

In this paper, we study the Ricci flow on manifolds with boundary. In the first part of the paper, we prove short-time existence and uniqueness of the solution, in which the boundary becomes instantaneously umbilic for positive time. In the second part of the paper, we prove that the flow we constructed in the first part preserves natural boundary conditions. More specifically, if the initial metric has a convex boundary, then the flow preserves positive curvature operator and the PIC1, PIC2 conditions. Moreover, if the initial metric has a two-convex boundary, then the flow preserves the PIC condition.

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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