John Willard Morgan is an American mathematician, well-known for his contributions to topology and geometry. He is currently Professor and Chair of the Mathematics Department at Columbia University. Wikipedia
The definitive Wikipedia entry for John Morgan. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/John_Morgan_%28mathematician%29
...Honor of the 60th Birthday of John Morgan Topology, Geometry, and Physics Apr 30-May 5, 2006 Department of Mathematics Columbia University This is a week-long conference focusing on the ... www.math.columbia.edu/~petero/MorganConference.html