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Results tagged with gr.group-theory
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user 159356
Questions about the branch of algebra that deals with groups.
7
votes
1
answer
141
views
Discrete cocompact group of isometries of Nil
Is it true that every group quasi-isometric to the Heisenberg group admits a proper cocompact action by isometries on Nil?
- 422
5
votes
1
answer
92
views
Infinite groups that admit a discrete, co-compact, bilipschitz action on $\mathbb{R}^3$
Apart from the abstract types of the crystallographic groups, are there any other abstract groups that admit a proper, co-compact, uniformly bilipschitz action on $\mathbb{R}^3$?
- 422
7
votes
3
answers
1k
views
Bass-Serre theory textbook
I am a PhD freshman working on topological graph theory and geometric group theory. I would like to learn some Bass-Serre theory. What do you think is the best introductory textbook in this topic? Tha …
- 422