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Results tagged with gr.group-theory
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user 9962
Questions about the branch of algebra that deals with groups.
2
votes
Property (T) and subgroups of finite index
Since $H$ contains a subgroup of finite index which is normal in $G$, what you are asking also follows from Theorem 1.7.1 of the book of Bekka, de la Harpe and Valette (mentioned in Jon Bannon's comme …
- 63.9k
6
votes
0
answers
288
views
Central extensions of automorphisms of Bruhat-Tits trees
This is the first time I am using Mathoverflow and I am still learning how to use it.
That is why I want to begin with a curious question:
Does the group of automorphisms of a Bruhat-Tits tree have n …
- 741