<div dir="ltr"><p dir="ltr" style="font-size:12.8px">BINGHAMTON GEOMETRY/TOPOLOGY SEMINAR</p><p dir="ltr" style="font-size:12.8px">   Date: Thursday, February 11th, 2016</p><p dir="ltr" style="font-size:12.8px">   Time:  2.50 pm</p><p dir="ltr" style="font-size:12.8px">   Place: Whitney Hall, Room 100E,  followed by coffee/tea in the<br>      Hilton Reading Room. Note the new location of the math department (<a href="http://www2.math.binghamton.edu/p/directions" target="_blank">http://</a><a href="http://www2.math.binghamton.edu/p/directions" target="_blank">www2.</a><a href="http://www2.math.binghamton.edu/p/directions" target="_blank">math.binghamton.edu</a><a href="http://www2.math.binghamton.edu/p/directions" target="_blank">/p/directions</a>).</p><p dir="ltr"><span style="font-size:12.8px">   Speaker: </span><strong style="color:rgb(51,51,51);font-family:Arial,sans-serif;line-height:16.8px">Peng Sun</strong><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;line-height:16.8px"> (Central University of Finance and Economics, Beijing, China) </span></p><p dir="ltr"><font color="#333333" style="font-size:12.8px">   Title: </font><strong style="color:rgb(51,51,51);font-family:Arial,sans-serif;line-height:16.8px">Exponential Decays and Topological Entropy</strong></p><p dir="ltr"><span style="font-size:12.8px">    Abstract: </span><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;line-height:16.8px;background-color:rgb(238,238,238)">We study two types of exponential decay under dynamics: Lebesgue number of open covers and expansive constants for expansive maps. We find that these exponents can provide better estimates of topological entropy.</span></p><p dir="ltr" style="font-size:12.8px">NOTE:  The seminar has a webpage where the semester's program is listed:</p><p dir="ltr" style="font-size:12.8px"><a href="http://www2.math.binghamton.edu/p/seminars/topsem" target="_blank">http://www2.math.binghamton.edu/p/seminars/topsem</a></p></div>