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Results tagged with gr.group-theory
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user 75215
Questions about the branch of algebra that deals with groups.
3
votes
1
answer
142
views
Topological amenability of actions - forgetting topology
Let $G$ be a (countable) discrete group and let $X$ be a locally compact Hausdorff space.
Assume that $G$ acts on $X$ by homeomorphisms. Recall that the action is (topologically) amenable if there ex …
- 536
7
votes
Topological amenability of actions - forgetting topology
After posting the question, I discussed with Siegfried Echterhoff, and more or less at the same time Nicolas Monod sent me an email, both giving me the following argument:
for an action of a group $G$ …
- 536
5
votes
Characterization of amenable actions
We have resolved this question recently in Proposition 3.16 of
https://arxiv.org/pdf/2003.03469.pdf
We prove, among other things, that an action of an exact locally compact group G on a von Neumann al …
- 536