Title: Faces of the stable commutator length norm ball
Speaker: Danny Calegari
Speaker Info: Caltech
Brief Description:
Special Note:

It often happens that a solution of an extremal problem in geometry has more regularity and nicer features than one has an a priori right to expect. I will show how a simple topological problem - when does an immersed curve on a surface bound an immersed subsurface? - is unexpectedly related to linear programming in nonseparable Banach spaces, and gives rise to geometric and dynamical rigidity and discreteness of symplectic representations.
Date: Wednesday, January 13, 2010
Time: 4:10pm
Where: Lunt 105
Contact Person: Ezra Getzler
Contact email: getzler@northwestern.edu
Contact Phone:
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