The maximal number of exceptional Dehn surgeries

Mon, 09/03/2009
15:45
Marc Lackenby (Oxford) Topology Seminar Add to calendar L3
I will outline the proof of two old conjectures of Cameron Gordon. The first states that the maximal number of exceptional Dehn surgeries on a 1-cusped hyperbolic 3-manifold is 10. The second states the maximal distance between exceptional Dehn surgeries on a 1-cusped hyperbolic 3-manifold is 8. The proof uses a combination of new geometric techniques and rigorous computer-assisted calculations. This is joint work with Rob Meyerhoff.