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arXiv · 2602.22864

Filters, topologies, the Rado graph and the Urysohn space

Peter J. Cameron
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Abstract

My work with Anatoly Vershik concerned automorphism groups of the Rado graph and homeomorphism groups of the Urysohn space. This paper contains some further thoughts on these issues, together with connections to topologies and filters on countable sets.

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Peter J. Cameron. 2026-02-26. Filters, topologies, the Rado graph and the Urysohn space. https://arxiv.org/abs/2602.22864

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