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JOURNALS // Zhurnal Matematicheskoi Fiziki, Analiza, Geometrii [Journal of Mathematical Physics, Analysis, Geometry] // Archive

Zh. Mat. Fiz. Anal. Geom., 2020 Volume 16, Number 4, Pages 460–472 (Mi jmag767)

Remarks on screen integrable null hypersurfaces in Lorentzian manifolds

Samuel Ssekajja

School of Mathematics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg-South Africa

Abstract: In the present paper, we show that the geometry of a screen integrable null hypersurface can be generated from an isometric immersion of a leaf of its screen distribution into the ambient space. We prove, under certain geometric conditions, that such immersions are contained in semi-Euclidean spheres or hyperbolic spaces, and the underlying null hypersurfaces are necessarily umbilic and screen totally umbilic. Where necessary, the examples are given to illustrate the main ideas.

Key words and phrases: screen integrable null hypersurfaces, normal curvature tensor of a leaf.

MSC: 53C25, 53C40, 53C50

Received: 23.09.2019
Revised: 20.02.2020

Language: English

DOI: 10.15407/mag16.04.460



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