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Questions

4
8
votes
1
answer
633
views

Why is Casson’s invariant worth studying?

mar 17 11 at 12:19 Greg Kuperberg 36.2k2116179

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4
votes
2
answers
521
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Why is the mapping class group of hyperbolic manifolds finite?

may 30 11 at 19:27 Agol 23.9k13384

 
2
votes
0
answers
434
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Splitting lemma for non abelian groups and mapping class group

mar 18 12 at 16:04 Lee Mosher 5,8061926