<div class="gmail_extra"><br><div class="gmail_quote"><div class="gmail_extra"><div class="gmail_quote"><div class="gmail_quote"> BINGHAMTON GEOMETRY/TOPOLOGY SEMINAR<br><br>This week, we will have our last seminar meeting, combined with <b>Dean's Speaker Series in Geometry and Topology.</b> Our speaker is Lee Mosher of Rutgers University - Newark.<br>
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<br><i>Date:</i> Thursday, May 10, 2012<br>
<i>Time:</i> 2:50-3:50pm<br><i>Place:</i> Library North 2205 followed by coffee/tea in the Anderson Reading Room.<br>
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<i>Speaker:</i> Lee Mosher (Rutgers University - Newark)<br><i>Title:</i> Hyperbolicity of the free splitting complex<i><br><br>Abstract:</i> A free splitting a finite rank free group F is a minimal action of F on a simplicial tree T with trivial edge stabilizers. The free splitting complex of F is a simplicial complex with one 0-simplex for each free splitting of F having 1 orbit of natural edges (modulo F-equivariant homeomorphism), and more generally one k-simplex for each free splitting with k+1 orbits of natural edges. We prove that the free splitting complex of F, when equipped with its simplicial metric, is a hyperbolic metric space. This is a joint work with M.Handel.</div>
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