Mathematics – General Topology
Scientific paper
1999-07-21
Journal of Group Theory 3 (2000), 407-417.
Mathematics
General Topology
10 pages, LaTeX 2e
Scientific paper
It is shown that every separable abelian topological group is isomorphic with a topological subgroup of a monothetic group (that is, a topological group with a single topological generator). In particular, every separable metrizable abelian group embeds into a metrizable monothetic group. More generally, we describe all topological groups that can be embedded into monothetic groups: they are exactly abelian topological groups of weight $\leq\frak c$ covered by countably many translations of every nonempty open subset.
Morris Sidney A.
Pestov Vladimir
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