Timeline for Groups acting on trees
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Mar 2, 2019 at 11:27 | history | suggested | user21820 | CC BY-SA 4.0 |
grammar fix
|
| Mar 2, 2019 at 11:25 | review | Suggested edits | |||
| S Mar 2, 2019 at 11:27 | |||||
| Mar 1, 2019 at 23:56 | comment | added | YCor | @MariaGerasimova you have to discard the focal case. Writing, for instance, the solvable group $\mathbf{Z}\wr\mathbf{Z}$ as an ascending HNN extension (w.r.t. an endomorphism with image of finite index), you make it act vertex-transitively on a tree with infinite valency (with abelian stabilizers). So you need to explicitly exclude the case of a fixed point at infinity. | |
| Mar 1, 2019 at 23:40 | comment | added | Maria Gerasimova | Thank you! And if I assume that stabilizers are amenable, will it be the same? | |
| Mar 1, 2019 at 23:15 | history | answered | YCor | CC BY-SA 4.0 |