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1 vote
1 answer
390 views

Derivative of Wasserstein distance $W^p_p$ along solutions of the continuity equation (contr...

Let $(\rho^{(i)}_t,{\bf v}^{(i)}_t)$ for $i = 1,2$ be two solutions of the continuity equation $$\partial \rho^{(i)}_t + \nabla\cdot \left({\bf v}^{(i)}_t \rho^{(i)}_t\right) = 0 \label{1}\tag{1}$$ on …
Fei Cao's user avatar
  • 730
2 votes
1 answer
282 views

Upper bound Wasserstein distance by $\chi^2$ distance

Given two random variables $X,Y$ which are both $\mathbb{N}$-valued and have the same expected value (which is some fixed positive constant), and denote their probability mass functions by ${\bf p} = …
Fei Cao's user avatar
  • 730
1 vote
1 answer
277 views

Bounding $2$-Wasserstein distance and the $L^1$ distance

My questions come from the paper Logarithmic Sobolev inequalities for some nonlinear PDE’s written by F. Malrieu (May 2001) where author omitted a good amount of details to be filled. Suppose that $W$ …
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  • 730