Abstract: I will survey (in)coherence of lattices in semisimple
Lie groups, with a view toward open problems and connections with
the geometry of locally symmetric spaces. Particular focus will be
placed on rank one lattices, where I will discuss...
Abstract: There seems to be an analogy between the classes of
fundamental groups of compact 3-manifolds and of one-relator
groups. (Indeed, many 3-manifold groups are also one-relator
groups.) For instance, Dehn’s Lemma for 3-manifolds (proved
by...
Abstract: This will be a broad talk about coherence of groups,
and how it relates to conjectures about hyperbolic groups with
planar boundaries. A group is coherent if every finitely generated
subgroup is finitely presented. This is a property...
