Event time:

Thursday, March 31, 2005 - 11:30am to Wednesday, March 30, 2005 - 7:00pm

Location:

431 DL

Speaker:

Yair Glasner

Speaker affiliation:

University of Illinois at Chicago

Event description:

This is joint work with Pete Storm and Juan Souto.

Let G be the fundamental group of a 3 dimensional hyperbolic manifold of finite volume.

We define an invariant topology on G, by taking the normal subgroups and

their cosets as a basis for the topology.

This is a refinement of the profinite topology.

We prove that every finitely generated subgroup of G is closed in this topology.

As a corollary we deduce that a maximal subgroup of infinite index in G cannot

be finitely generated.