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arXiv 0705.0766math.DGmath.AP
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曲率为1/4-pinched的流形是空间型

Manifolds with 1/4-pinched Curvature are Space Forms

S. Brendle, R. M. Schoen

摘要:

设(M,g_0)是具有逐点1/4-pinched截面曲率的紧致黎曼流形.我们证明了里奇流使g_0变形为常曲率度量。证明使用的事实,也建立在本文中,即正各向同性曲率保持的里奇流在所有维度。我们还依赖于汉密尔顿和玻姆和威尔金的早期工作。

英文摘要:

Let (M,g_0) be a compact Riemannian manifold with pointwise 1/4-pinched sectional curvatures. We show that the Ricci flow deforms g_0 to a constant curvature metric. The proof uses the fact, also established in this paper, that positive isotropic curvature is preserved by the Ricci flow in all dimensions. We also rely on earlier work of Hamilton and of Bohm and Wilking.

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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