A pseudolocality theorem for Ricci flow

Details A pseudolocality theorem for Ricci flow A pseudolocality theorem for Ricci flow

2009-08-06

arxiv.org/abs/0908.0869v3

Mathematics

Differential Geometry

11 pages, I have add one mild assumption on the theorem and completely rewrites the proof of the theorem which avoids the use

Scientific paper

In this paper we will give a simple proof of a modification of a result on pseudolocality for the Ricci flow by P.Lu without using the pseudolocality theorem 10.1 of Perelman [P1]. We also obtain an extension of a result of Hamilton on the compactness of a sequence of complete pointed Riemannian manifolds $\{(M_k,g_k(t),x_k)\}_{k=1}^{\infty}$ evolving under Ricci flow with uniform bounded sectional curvatures on $[0,T]$ and uniform positive lower bound on the injectivity radii at $x_k$ with respect to the metric $g_k(0)$.

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