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On semi-parallel lightlike hypersurfaces of indefinite Kenmotsu manifolds

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Abstract

We study semi-parallel lightlike hypersurfaces of an indefinite Kenmotsu manifold, tangent to the structure vector field. Some Theorems on parallel and semi-parallel vector field, geodesibility of lightlike hypersurfaces are obtained. The geometrical configuration of such lightlike hypersurfaces is established. We prove that, in totally contact umbilical lightlike hypersurfaces of an indefinite Kenmotsu manifold which has constant \({\overline{\phi}}\)-holomorphic sectional curvature c, tangent to the structure vector field and such that its distribution is parallel, the parallelism and semi-parallelism notions are equivalent.

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  1. Fortuné Massamba, Department of Mathematics, University of Botswana, Private Bag 0022, Gaborone, Botswana

    Fortuné Massamba

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  1. Fortuné Massamba
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Massamba, F. On semi-parallel lightlike hypersurfaces of indefinite Kenmotsu manifolds. J. Geom. 95, 73–89 (2009). https://doi.org/10.1007/s00022-010-0021-7

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  • DOI: https://doi.org/10.1007/s00022-010-0021-7

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