Abstract
We prove that the Lipschitz-free space over a separable ultrametric space has a monotone Schauder basis and is isomorphic to ℓ 1. This extends results of A. Dalet using an alternative approach.
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Cúth, M., Doucha, M. Lipschitz-Free Spaces Over Ultrametric Spaces. Mediterr. J. Math. 13, 1893–1906 (2016). https://doi.org/10.1007/s00009-015-0566-7
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DOI: https://doi.org/10.1007/s00009-015-0566-7