Michel Van den Bergh at MSRI - Three-dimensional flops and non-commutative rings

<BODY> MSRI Streaming Video Series <BR> Michel Van den Bergh - Three-dimensional flops and non-commutative rings <BR> <center> A PDF version of the lecture notes is available <A HREF="http://www.msri.org/publications/ln/msri/2003/halgebra/van_den_bergh/1/meta/aux/van_den_bergh.pdf">here</A>. </center> </BODY>