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A characterisation of octahedrality in Lipschitz-free spaces

Functional Analysis 2016-12-13 v1

Abstract

We characterise the octahedrality of Lipschitz-free space norm in terms of a new geometric property of the underlying metric space. We study the metric spaces with and without this property. Quite surprisingly, metric spaces without this property cannot embed isometrically into 1\ell_1 and similar Banach spaces.

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Cite

@article{arxiv.1612.03808,
  title  = {A characterisation of octahedrality in Lipschitz-free spaces},
  author = {Antonín Procházka and Abraham Rueda Zoca},
  journal= {arXiv preprint arXiv:1612.03808},
  year   = {2016}
}

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17 pages