Department of Mathematics, Vanderbilt University, Nashville, Tennessee 37240 ; Department of Mathematics, Vanderbilt University, Nashville, Tennessee 37240
Abstract:
In this paper, we introduce the idea of tame combings for finitely presented groups. If is a closed irreducible 3-manifold and is tame combable, then the universal cover of is homeomorphic to . We show that all asynchronously automatic and all semihyperbolic groups are tame combable.