Timeline for Is the set of all ICC amenable groups countable?
Current License: CC BY-SA 4.0
3 events
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| Aug 30, 2020 at 8:38 | comment | added | Stefaan Vaes | I think that in your question, your are only mentioning countability of equivalence classes. Maybe you can post a new and more precise question about these other points that you have in mind. | |
| Aug 29, 2020 at 6:05 | comment | added | Chilperic | Thanks very much, Stefaan and YCor. I was aware of some of this work on cardinality of these classes. I was wondering more about thinking of them along the results we have for countable Borel equivalence relations. Does Silver's dichotomy hold -- either countable number of classes or an uncountable number of singletons? Is it possible to have a group action so that the classes are orbits? That sort of thing. | |
| Aug 28, 2020 at 12:47 | history | answered | Stefaan Vaes | CC BY-SA 4.0 |