neretin
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Last revision Both sides next revision | ||
|
neretin [2018/03/30 13:23] jraimbau |
neretin [2018/03/30 15:48] jraimbau |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| === Presentation === | === Presentation === | ||
| + | |||
| + | The Neretin group of a regular tree is defined as a group of "piecewise automorphisms" on the boundary. It can be endowed with a locally compact topology, and has no lattices. It is a natural question to ask whether it has IRSs beyond the trivial ones. It is likely that a proof that IRSs "parabolic" subgroups of the Neretin groups (subgroups fixing a point on the boundary of the tree) can be classified using a modification of an argument for similar groups in the discrete case, and we hope that this might help proving that there are nontrivial IRSs in the Neretin groups. | ||
| === Lecture plan === | === Lecture plan === | ||
neretin.txt · Last modified: 2018/05/14 17:19 by jraimbau
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
