Presented by: 
Gerard Besson (Joseph Fourier University, Grenoble)
Tue 20 Dec, 2:00 pm - 3:00 pm
Mansergh Shaw building (45), room 204

Open subsets of S3 or R3 can have a rich and complicated topology and geometry. Some provide examples of manifolds with striking topological properties. By contrast, their geometry remains widely unknown. We will try to make these points more explicit and the talk will be elementary.