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Feb. 19: Topology Seminar, Jens Harlander

Jens Harlander will speak at the Topology Seminar at 3 p.m. Friday, Feb. 19, in Math Building, Room 124.

Title: Hyperbolic Groups

Abstract: Geometric group theory is the study of algebraic objects such as groups, by regarding them as symmetries of geometric objects, such as metric spaces. A good choice for the metric space is the Cayley graph associated with a finite generating set. If geodesic triangles in the Cayley graph are uniformly thin we say the group is hyperbolic. Just as most surfaces are hyperbolic, and “most” 3-manifolds are hyperbolic, one can show that “most” finitely presented groups are hyperbolic. In my talk I will give a basic introduction to the theory of hyperbolic groups.


February 19, 2016
3:00 pm - 3:50 pm
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