arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1710.06751math.PR
收藏

构造Wasserstein扩散的一种新方法

A new approach for the construction of a Wasserstein diffusion

Victor Marx

摘要:

本文给出了Wasserstein空间P2(R)上具有二阶矩的概率测度扩散过程的构造. Konarovskyi在几篇论文中介绍了这个过程(例如,参见“A system of coalescing heavy diffusion particles on the real line”,2017),并且包括N趋于无穷大时N个聚结和质量携带粒子系统的极限。它的性质类似于一个标准的欧几里德布朗运动,在某种意义上,我们将在本文中精确。我们还将其与von Renesse和Sturm构造的P2(R)上的Wasserstein扩散进行了比较(参见熵测度和Wasserstein扩散)。我们通过构造一个具有短程相互作用的粒子系统,并使相互作用的范围趋于零,来实现这个过程。这种构造可以看作是由一系列更平滑的过程对Konarovskyi奇异过程的近似。

英文摘要:

We propose in this paper a construction of a diffusion process on the Wasserstein space P\_2(R) of probability measures with a second-order moment. This process was introduced in several papers by Konarovskyi (see e.g. "A system of coalescing heavy diffusion particles on the real line", 2017) and consists of the limit when N tends to infinity of a system of N coalescing and mass-carrying particles. It has properties analogous to those of a standard Euclidean Brownian motion, in a sense that we will precise in this paper. We also compare it to the Wasserstein diffusion on P\_2(R) constructed by von Renesse and Sturm (see Entropic measure and Wasserstein diffusion). We obtain that process by the construction of a system of particles having short-range interactions and by letting the range of interactions tend to zero. This construction can be seen as an approximation of the singular process of Konarovskyi by a sequence of smoother processes.

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。

↑