Geometry/Physics Seminar

Title: Integrable hierarchies and singularity theory
Speaker: Professor Yongbin Ruan
Speaker Info: University of Michigan
Brief Description:
Special Note:

Almost twenty years ago, Kontsevich proved an amazing theorem (conjectured by Witten) that the intersection theory of Deligne-Mumford moduli space of curves is governed by KDV-hierarchy. In many ways, this is a mysterious theorem that we don't really understand why it should be true. In the talk, I will described a generalization (again conjectured by Witten). It will take us into the context of integrable hierarchies, Kac-Moody algebra and singularity theory. Now, we understand that Witten-Kontsevich theorem is just a special case of larger correspondence between representation theory and singularities.
Date: Thursday, October 23, 2008
Time: 4:10pm
Where: Lunt 107
Contact Person: Prof. Gabriel Kerr
Contact email: gdkerr@math.northwestern.edu
Contact Phone: 773-936-6405
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