dc.contributor.author Baum, Helga dc.contributor.author Juhl, Andreas dc.date.accessioned 2016-09-23T15:48:23Z dc.date.available 2016-09-23T15:48:23Z dc.date.issued 2010 dc.identifier.isbn 978-3-7643-9908-5 dc.identifier.uri http://publications.mfo.de/handle/mfo/523 dc.description.abstract Conformal invariants (conformally invariant tensors, conformally covariant differential operators, conformal holonomy groups etc.) are of central significance in differential geometry and physics. Well-known examples of conformally covariant operators are the Yamabe, the Paneitz, the Dirac and the twistor operator. These operators are intimely connected with the notion of Branson’s Q-curvature. The aim of these lectures is to present the basic ideas and some of the recent developments around Q -curvature and conformal holonomy. en_US The part on Q -curvature starts with a discussion of its origins and its relevance in geometry and spectral theory. The following lectures describe the fundamental relation between Q -curvature and scattering theory on asymptotically hyperbolic manifolds. Building on this, they introduce the recent concept of Q -curvature polynomials and use these to reveal the recursive structure of Q -curvatures. The part on conformal holonomy starts with an introduction to Cartan connections and its holonomy groups. Then we define holonomy groups of conformal manifolds, discuss its relation to Einstein metrics and recent classification results in Riemannian and Lorentzian signature. In particular, we explain the connection between conformal holonomy and conformal Killing forms and spinors, and describe Fefferman metrics in CR geometry as Lorentzian manifold with conformal holonomy SU(1,m). dc.language.iso en_US en_US dc.publisher Birkhäuser Basel en_US dc.relation.ispartofseries Oberwolfach Seminars;Vol. 40 dc.title Conformal Differential Geometry en_US dc.type Book en_US dc.identifier.doi 10.1007/978-3-7643-9909-2 local.series.id OWS-40
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