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arXiv 1011.3979math.DG
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黎曼流形上熵时间导数的渐近估计

Asymptotic estimates on the time derivative of entropy on a Riemannian manifold

Adrian P. C. Lim, Dejun Luo

摘要:

研究了黎曼流形上热方程解的熵。当流形是紧流形时,我们分别给出了关于熵的变化率的两个估计,即关于里奇曲率的下界和关于谱隙的下界。我们对三维双曲空间的显式计算表明,熵的时间导数渐近有界于两个正常数。

英文摘要:

We consider the entropy of the solution to the heat equation on a Riemannian manifold. When the manifold is compact, we provide two estimates on the rate of change of the entropy in terms of the lower bound on the Ricci curvature and the spectral gap respectively. Our explicit computation for the three dimensional hyperbolic space shows that the time derivative of the entropy is asymptotically bounded by two positive constants.

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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