Informal Geometric Analysis Seminar

Title: K-stability for Sasakian manifolds
Speaker: Tristan Collins
Speaker Info: Columbia University
Brief Description:
Special Note:

I will introduce a notion of K-semistability for Sasakian manifolds. This extends to the irregular case the orbifold K-semistability of Ross-Thomas. Our main result is that a Sasakian manifold with constant scalar curvature is necessarily K-semistable. As an application, I will show how one can recover the volume minimization results of Martelli-Sparks-Yau, and the Lichnerowicz obstruction of Gauntlett-Martelli-Sparks-Yau from this point of view. Joint with G. Székelyhidi.
Date: Friday, November 15, 2013
Time: 03:00pm
Where: Lunt 101
Contact Person: Valentino Tosatti
Contact email: tosatti@math.northwestern.edu
Contact Phone:
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