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Results tagged with gt.geometric-topology
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user 70446
Topology of cell complexes and manifolds, classification of manifolds (e.g. smoothing, surgery), low dimensional topology (e.g. knot theory, invariants of 4-manifolds), embedding theory, combinatorial and PL topology, geometric group theory, infinite dimensional topology (e.g. Hilbert cube manifolds, theory of retracts).
3
votes
0
answers
77
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Circle actions on simply connected spin manifolds
Recently I've been stuck by a concrete problem. I'll try to make it more general.
Suppose $M$ is a simply connected spin manifold (with higher enough dimension), and $S^1$ acts on $M$ effectively. Th …
- 123
3
votes
1
answer
317
views
Simply connected 4-manifolds with boundary
I think I've encountered a question about 4-manifolds which maybe easy but I'm not familiar with. Can anyone give me an example of a simply connected 4-manifold $M$ (with boundary, of course) with $H_ …
- 123