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Conformally flat Lorentzian manifolds with special holonomy
Conformally flat Lorentzian manifolds special holonomy
2010/11/23
Connected holonomy groups of conformally flat Lorentzian manifolds are classified. It is shown that among conformally flat Lorentzian manifolds there are two classes of spaces with special holonomy: ...
Harmonic morphisms from conformally flat spaces
horizontally conformal map harmonic morphism
2010/9/14
In this note we give a method to construct non-trivial harmonic morphisms via conformal change of the metric of the domain generalizing a theorem previously only known in the case of start manifold to...