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Research Papers
All-set-homogeneous spaces
N. D. Lebedevaab, A. M. Petruninc a Saint Petersburg State University
b St. Petersburg Department of Steklov Mathematical Institute of Russian Academy of Sciences
c Math. Dept. PSU, University Park, PA 16802, USA
Abstract:
A metric space is said to be all-set-homogeneous if any isometry between its subsets can be extended to an isometry of the whole space. We give a classification of a certain subclass of all-set-homogeneous length spaces.
Keywords:
metric homogeneous spaces, metric foundations of geometry, universal trees, Urysohn universal space, isometry group.
Received: 24.09.2022
Citation:
N. D. Lebedeva, A. M. Petrunin, “All-set-homogeneous spaces”, Algebra i Analiz, 35:3 (2023), 52–56; St. Petersburg Math. J., 35:3 (2024), 473–476
Linking options:
https://www.mathnet.ru/eng/aa1868 https://www.mathnet.ru/eng/aa/v35/i3/p52
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