Gunter Ziegler at MSRI - 4-Dimensional Polytopes, I

<BODY> MSRI Streaming Video Series <BR> Gunter Ziegler - 4-Dimensional Polytopes, I <BR> <center> Additional materials for this lecture can be found <A HREF="http://www.math.tu-berlin.de/~ziegler/">here</A>. </center> </BODY>