Abstract
Most important examples of null hypersurfaces in a Lorentzian manifold admit an integrable screen distribution, which determines a spacelike foliation of the null hypersurface. In this paper, we obtain conditions for a codimension two spacelike submanifold contained in a null hypersurface to be a leaf of the (integrable) screen distribution. For this, we use the rigging technique to endow the null hypersurface with a Riemannian metric, which allows us to apply the classical Eschenburg maximum principle. We apply the obtained results to classical examples as generalized Robertson–Walker spaces and Kruskal space.
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Communicated by Young Jin Suh.
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This paper has been partially supported by the Ministerio de Economía y Competitividad Grant FEDER-MTM2016-78647-P and Junta de Andalucía research group FQM-324.
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Gutiérrez, M., Olea, B. Codimension Two Spacelike Submanifolds Through a Null Hypersurface in a Lorentzian Manifold. Bull. Malays. Math. Sci. Soc. 44, 2253–2270 (2021). https://doi.org/10.1007/s40840-020-01056-w
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DOI: https://doi.org/10.1007/s40840-020-01056-w