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arXiv · 2211.07623

Manifolds with PIC1 pinched curvature

Man-Chun Lee·Peter M. Topping
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Abstract

Recently it has been proved (Lee-Topping 2022, Deruelle-Schulze-Simon 2022, Lott 2019) that three-dimensional complete manifolds with non-negatively pinched Ricci curvature must be flat or compact, thus confirming a conjecture of Hamilton. In this paper we generalise our work on the existence of Ricci flows from non-compact pinched three-manifolds in order to prove a higher-dimensional analogue. We construct a solution to Ricci flow, for all time, starting with an arbitrary complete non-compact manifold that is PIC1 pinched. As an application we prove that any complete manifold of non-negative complex sectional curvature that is PIC1 pinched must be flat or compact.

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Man-Chun Lee, Peter M. Topping. 2022-11-14. Manifolds with PIC1 pinched curvature. https://arxiv.org/abs/2211.07623

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