Integral homology of hyperbolic three--manifolds

Series: 
Geometry Topology Seminar
Friday, April 5, 2013 - 14:00
1 hour (actually 50 minutes)
Location: 
Skiles 006
,  
Institut de Mathematiques de Jussieu, Universite Pierre et Marie Curie
Organizer: 
It is a natural question to ask whether one can deduce topological properties of a finite--volume three--manifold from its Riemannian invariants such as volume and systole. In all generality this is impossible, for example a given manifold has sequences of finite covers with either linear or sub-linear growth. However under a geometric assumption, which is satisfied for example by some naturally defined sequences of arithmetic manifolds, one can prove results on the asymptotics of the first integral homology. I will try to explain these results in the compact case (this is part of a joint work with M. Abert, N. Bergeron, I. Biringer, T. Gelander, N. Nikolov and I. Samet) and time permitting I will discuss their extension to manifolds with cusps such as hyperbolic knot complements.