[Banach] Abstract of a paper by Aude Dalet

This is an announcement for the paper "Free spaces over some proper metric spaces" by Aude Dalet. Abstract: We prove that the Lipschitz-free space over a countable proper metric space and over a proper ultrametric space is isometric to a dual space and has the metric approximation property. Archive classification: math.FA Mathematics Subject Classification: 46B10, 46B28 Submitted from: aude.dalet@univ-fcomte.fr The paper may be downloaded from the archive by web browser from URL http://front.math.ucdavis.edu/1404.3939 or http://arXiv.org/abs/1404.3939