On conformal invariance of isotropic geodesics
Maks A. Akivis, Vladislav V. Goldberg
Abstract
We consider real isotropic geodesics on manifolds endowed with a pseudoconformal structure and their applications to the theory of lightlike hypersurfaces on such manifolds, the geometry of four-dimensional conformal structures of Lorentzian type, and a classification of the Einstein spaces.
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