# Questions tagged [gt.geometric-topology]

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).

**12**

**3**answers

### Spec Z analogue of Thurston program?

**52**

**8**answers

### Questions about analogy between Spec Z and 3-manifolds

**8**

**2**answers

### Construction of maps $f:S^3 \to S^2$ with arbitrary Hopf invariant?

**4**

**2**answers

### Can you do surgery on framed tangles?

**3**

**2**answers