<br> BINGHAMTON GEOMETRY/TOPOLOGY SEMINAR<br><div class="gmail_quote"><div class="gmail_quote">
<br><i>Date:</i> Thursday, Feb 16, 2012<div><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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</div><i>Speaker:</i> Ross Geoghegan (Binghamton)<br><br><i>Title: </i>Some remarks on horospherical limit points<i></i><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse"></span><div>
<i><br>Abstract:</i><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse"></span>
When a group acts on a simply connected non-positively curved space, such as Euclidean space, Hyperbolic space or a tree,
the orbit of a point can have limit points at infinity. There are various definitions of what should be called a limit point.
Some go back to the 19th century, some modern, and each invented for a good reason. My talk will explore some of these ideas
with emphasis on new work I have been doing with Robert Bieri.</div>
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