A novel construction of Urysohn universal ultrametric space via the Gromov-Hausdorff ultrametric

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چکیده

We establish universality and ultra-homogeneity of ( U , u GH ) the collection all compact ultrametric spaces endowed with so-called Gromov-Hausdorff . This result also gives rise to a novel construction R-Urysohn universal space for each countable subset R ⊂ ≥ 0 containing 0.

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ژورنال

عنوان ژورنال: Topology and its Applications

سال: 2021

ISSN: ['1879-3207', '0166-8641']

DOI: https://doi.org/10.1016/j.topol.2021.107759