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math.DG1998
Lorentzian twistor spinors and CR-geometry
Helga Baum
We prove that there exist global solutions of the twistor equation on the Fefferman spaces of strictly pseudoconvex spin manifolds of arbitrary dimension and we study their propert…
math.DG1998
Twistor spinors on Lorentzian symmetric spaces
Helga Baum
We solve the twistor equation on all indecomposable Lorentzian symmetric spaces explicity.
math.DG1998
Parallel spinors and holonomy groups on pseudo-Riemannian spinmanifolds
Helga Baum, Ines Kath
We describe the possible holonomy groups of simply connected irreducible non-locally symmetric pseudo-Riemannian spin manifolds which admit parallel spinors.