Fields Institute Operator Algebra Seminar

Event Information Noncommutative geometry, equivariant cohomology, and conformal invariants
16:00 on Monday March 30, 2015
18:00 on Monday March 30, 2015
BA6183, Bahen Center, 40 St. George St.
Raphael Ponge

Seoul National University

We will explain how to apply the framework of noncommutative geometry in the setting of conformal geometry. We plan to describe three main results. The first result is a reformulation of the local index formula of Atiyah-Singer in conformal geometry, i.e., in the setting of the action of a group of conformal-diffeomorphism. The second result is the construction of new conformal invariants out of equivariant characteristic classes. The third result is a version in conformal geometry of the Vafa-Witten inequality for eigenvalues of Dirac operators. This is joint work with Hang Wang (University of Adelaide)