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Each topological group embeds into a duoseparable topological group. (arXiv:2002.06232v1 [math.GN]) http://arxiv.org/abs/2002.06232
Each topological group embeds into a duoseparable topological group. (arXiv:2002.06232v1 [math.GN]) http://arxiv.org/abs/2002.06232