Mark Behrens

Massachusetts Institute of Technology
Scientific, Seminar
Exotic Spheres and Topological Modular Forms Colloquium
February 4, 2013
University of Washington
An exotic sphere is a smooth manifold which is homeomorphic, but not diffeomorphic, to a standard sphere. In which dimensions do there exist exotic spheres? I will discuss what we know about the answer to this question in terms of the classical work...
Scientific, Conference
Cascade Topology Seminar
November 7–8, 2015
Portland State University
The 55th semi-annual Cascade Topology Seminar features talks from a mix of algebraic and geometric topologists, and will be held on the November 7-8 weekend at Portland State University.