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arXiv 1805.00539math.DGmath.AP
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里奇流的收敛稳定性

Convergence Stability for Ricci Flow

Eric Bahuaud, Christine Guenther, James Isenberg

摘要:

几何流的收敛稳定性原理是流对初始条件的连续依赖性与不动点的稳定性的结合。这意味着,如果流从一个初态$g_0$存在的所有时间,并收敛到一个稳定的不动点,那么流的解决方案,开始附近的$g_0$也收敛到不动点。我们证明了这一点的情况下,里奇流,仔细证明了连续依赖于初始条件。为了简化几何流动方程,常对初始几何形状作对称性假设。作为我们的结果的应用,我们扩展已知的收敛结果,这些初始数据,其中包含没有对称性的几何形状的开放集。

英文摘要:

The principle of convergence stability for geometric flows is the combination of the continuous dependence of the flow on initial conditions, with the stability of fixed points. It implies that if the flow from an initial state $g_0$ exists for all time and converges to a stable fixed point, then the flows of solutions that start near $g_0$ also converge to fixed points. We show this in the case of the Ricci flow, carefully proving the continuous dependence on initial conditions. Symmetry assumptions on initial geometries are often made to simplify geometric flow equations. As an application of our results, we extend known convergence results to open sets of these initial data, which contain geometries with no symmetries.

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