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Bibliographic Details
Main Authors: Agostini, Claudio, Medini, Andrea, Zdomskyy, Lyubomyr
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2501.09455
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Table of Contents:
  • Building on results of Medvedev, we construct a $\mathsf{ZFC}$ example of a non-Polish topological group that is countable dense homogeneous. Our example is a dense subgroup of $\mathbb{Z}^ω$ of size $\mathfrak{b}$ that is a $λ$-set. We also conjecture that every countable dense homogenous Baire topological group with no isolated points contains a copy of the Cantor set, and give a proof in a very special case.