Warped product of lightlike manifolds
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Krishan L. Duggal
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Article
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2001
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Elsevier Science
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English
β 547 KB
This paper deals with a class of lightlike manifolds, called globally null manifolds, which admit a single global null vector field and a complete Riemannian hypersurface. We study two types of warped products and propose some global problems on null sectional curvature, cut locus, Morse theory and