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Two Remarks on the Wasserstein Dirichlet Form

机译:关于Wasserstein Dirichlet形式的两种言论

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摘要

The Wasserstein diffusion is an Ornstein-Uhlenbeck type process on the set of all probability measures with the Wasserstein metric as intrinsic metric. Sturm and von Renesse constructed in [6] this process in the case of probability measures over the unit interval using Dirichlet form theory. An essential step in this construction is the closability of a certain gradient form, defined for smooth cylindrical test functions, in the space L~2 w.r.t. the entropic measure Q_β. In this paper we will first give an alternative proof for this closability, avoiding the striking, but elaborate integration by parts formula for Q_β used in [6]. Second, we give explicit conditions under which certain finite-dimensional particle approximations introduced in the paper [1] by Andres and von Renesse do converge in the resolvent sense to the Wasserstein diffusion, a question that was left open in the above cited paper.
机译:Wassertein扩散是一种Ornstein-Uhlenbeck型过程,可以作为内在度量的Wassersein指标的所有概率措施集。在使用Dirichlet形式理论的情况下,在[6]的情况下,在[6]的情况下,在[6]中构建的概率测量的情况下的Sturm和Von Rensess。该结构的基本步骤是在空间L〜2 W.R.T中定义为平滑圆柱形测试函数的某种梯度形式的关闭性。熵测量Q_β。在本文中,我们将首先给出这种功能性的替代证据,避免突击,但通过[6]中使用的Q_β的零件公式精细地进行整合。其次,我们提供了明确的条件,在纸张[1]中引入的某些有限尺寸粒子近似,andres和von renesse会聚在瓦斯斯坦扩散的解析意义上,是在上面引用的纸张中留下的问题。

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