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2 questions
8
votes
2
answers
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Braid groups and Kazhdan's property (T)
In Nica's dissertation Group actions on median spaces, we can read the following assertion:
Braid groups do not contain infinite subgroups satisfying Kazhdan's property (T).
This is used in order to ...
- 8,401
6
votes
1
answer
257
views
Explicit description (=pictures!) of elements in $Mod_g[k]$?
This question is probably obvious to experts but I couldn't find the answer in the literature...
Background: Consider the mapping class group $Mod_g$ of the closed genus $g$ surface. There are many ...
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