Jason Behrstock: Temple geometry seminar (5 pm,Tuesday, Jan 22)

Jason Behrstock of CUNY will be speaking in the Temple Geometry and Topology Seminar.

Title: Divergence, thick groups, and morse geodesics

Abstract: In a metric space the divergence of a pair of rays is a way
to measure how quickly they separate from each other.  Understanding
what divergence rates are possible in the presence of non-positive
curvature was raised as a question by Gromov and then refined by
Gersten.  We will describe a construction of groups with several
interesting properties, some of which shed light on the above
question.  (Joint work with Cornelia Drutu.)

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