Hyperbolicity in CAT(0)-spaces
Presenter
September 27, 2016
Keywords:
- CAT(0) space
- Riemannian geometry
- negative curvature manifolds
- hyperbolic manifold
- orbifolds
- Lie groups of Riemannian isomorphisms
MSC:
- 57M60
- 57-xx
- 58-xx
- 58Dxx
- 58D05
- 58D19
- 57R18
- 20F67
- 20F65
Abstract
Bounded cohomology shows that lattices in higher rank Lie groups are not acylindrically hyperbolic. Nevertheless, convex cocompact subgroups of higher rank simple Lie groups can be defined and studied in analogy to the theory of Kleinian groups. We use these ideas to construct in some cases surface subgroups of cocompact lattices in higher rank Lie groups.