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All Journal AL-ULUM: JURNAL SAINS DAN TEKNOLOGI
Makiese, Michael Kilela
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Energy

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OSSERMAN LIGHTLIKE HYPERSURFACE CASES Mulebu, Paulin Shakwanda; Mamona, Oscar Lungiambudila; Ta-Yen, Gerard Tawaba Musian; Landa, Alain Musesa; Makiese, Michael Kilela
AL ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 11, No 3 (2025)
Publisher : UPT Publication and Journal Management, Islamic University of Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jst.v11i3.21296

Abstract

In this study, we constructed four examples of light-like hypersurfaces that satisfy the conditions of an Osserman manifold, based on the characterisation of light-like hypersurfaces of a pseudo-Riemannian manifold of dimension m+2. To this end, we relied on several theoretical results and propositions, particularly those of DUGAL and BEJANCU, in order to establish the conditions under which a light-like hypersurface  of a pseudo-Riemannian manifold , can be characterized as an Osserman manifold. This characterization is achieved either through the admissible screen distribution  or through the induced algebraic curvature structure. Accordingly, we presented several examples of lightlike hypersurfaces in a semi-Riemannian setting that satisfy the Osserman condition by verifying the required properties of both the Jacobi operator and the induced algebraic curvature.
Co-Authors Landa, Alain Musesa Mamona, Oscar Lungiambudila Mulebu, Paulin Shakwanda Ta-Yen, Gerard Tawaba Musian