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Let $G$ be a compact Hausdorff topological group, and let $H$ be a torsion-free group satisfying the ascending condition, i.e. there are no infinite strictly ascending chains $H_1 of subgroups of $H.$

Prove that there is no non-trivial homomorphism of $G$ into $H.$

Note: no topology is considered on $H$ and "homomorphism" simply means "group homomorphism."

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    @ymar: Yes, sure.2012-03-05

1 Answers 1

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It is easy to see that such an $H$ is finitely generated and the rest follows from Nikolov-Segal theorem.

I wonder if there is a non high-tech way to prove it though!