Wednesday, February 12, 2014 - 10:15am - 11:05am
Sigurd Angenent (University of Wisconsin, Madison)
Curves that evolve under Curve Shortening by a combination of rescaling and Euclidean motions are solutions to a system of ordinary differential equations on the unit tangent bundle of Rn.
The flow, which has no fixed points, does admit an interesting Morse decomposition, especially after compactifying the phase space.

In this talk I will present the many different solutions to Curve Shortening that arise in this way.
Monday, January 30, 2012 - 11:15am - 12:15pm
Mark Behrens (Massachusetts Institute of Technology)
In response to a question of Milnor, a collaboration of Mike Hill, Mike Hopkins, Mark Mahowald, and myself have been attempting to determine in which dimensions exotic spheres exist. We will review
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