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arXiv 1503.06389math.OCmath.AP
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最优运输中的BV估计及其应用

BV Estimates in Optimal Transportation and Applications

Guido De Philippis, Alpár Mészáros, Filippo Santambrogio, Bozhidar Velichkov

摘要:

本文研究了最优运输中变分问题解的BV正则性。作为一个应用,我们恢复BV估计的一些非线性抛物型偏微分方程的解决方案,通过最佳运输技术。我们还证明了具有BV密度的测度在由给定BV函数f有界的密度测度集上的Wasserstein投影也是有界变差的。特别地,在f = 1的情况下(投影到具有L^ \infty界的密度集上),我们精确地证明了投影的全变差不超过投影测度的全变差。这是一个可以迭代的估计,因此在一些进化偏微分方程(人群运动,。. .).我们还建立了一些性质的Wasserstein投影是有趣的,在自己的,并允许例如证明独特的这样一个投影在一个非常一般的框架。

英文摘要:

In this paper we study the BV regularity for solutions of variational problems in Optimal Transportation. As an application we recover BV estimates for solutions of some non-linear parabolic PDE by means of optimal transportation techniques. We also prove that the Wasserstein projection of a measure with BV density on the set of measures with density bounded by a given BV function f is of bounded variation as well. In particular, in the case f = 1 (projection onto a set of densities with an L^\infty bound) we precisely prove that the total variation of the projection does not exceed the total variation of the projected measure. This is an estimate which can be iterated, and is therefore very useful in some evolutionary PDEs (crowd motion,. . .). We also establish some properties of the Wasserstein projection which are interesting in their own, and allow for instance to prove uniqueness of such a projection in a very general framework.

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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