Timeline for Relative amenability of subgroups
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 26, 2013 at 22:10 | vote | accept | bemihai | ||
| Sep 26, 2013 at 20:51 | answer | added | Jesse Peterson | timeline score: 2 | |
| Sep 26, 2013 at 14:34 | comment | added | user23860 | Actually it doesn't matter, because if $\Sigma G$ is amenable relative to $\Lambda$, then $\Sigma$ (as a subgroup of $\Sigma G$) has to be amenable relative to $\Lambda$. | |
| Sep 26, 2013 at 14:25 | comment | added | bemihai | @Vahid: Although it is not explicitly stated, I'm interested in the case when $G$ is nontrivial. | |
| Sep 26, 2013 at 14:19 | comment | added | user23860 | I guess $\Sigma G$ is not (generally) amenable relative to $\Lambda$. Take for example $G=\{e\}$, the trivial group, then $\Sigma$ has to be amenable relative to $\Lambda$. I notice that my counterexample is not a complete proof, but I hope it sheds some light to the problem. | |
| Sep 26, 2013 at 13:32 | history | asked | bemihai | CC BY-SA 3.0 |