%0 Journal Article
%T Free spaces over some proper metric spaces
%A Aude Dalet
%J Mathematics
%D 2014
%I arXiv
%X We prove that the Lipschitz-free space over a countable proper metric space is isometric to a dual space and has the metric approximation property. We also show that the Lipschitz-free space over a proper ultrametric space is isometric to the dual of a space which is isomorphic to c_0.
%U http://arxiv.org/abs/1404.3939v3