Results 61 to 70 of about 197 (118)
On anti-invariant semi-Riemannian submersions from Lorentzian para-Sasakian manifolds
Filomat, 2018 In this paper, we study a semi-Riemannian submersion from Lorentzian almost (para) contact manifolds and find necessary and sufficient conditions for the characteristic vector field to be vertical or horizontal. We also obtain decomposition theorems for anti-invariant semi-Riemannian submersions from Lorentzian para-Sasakian manifolds onto ...
Faghfouri, Morteza, Mashmouli, Sahar
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On lorentzian α-sasakian manifolds
, 2005 The present paper deals with Lorentzian alpha-Sasakian manifolds with conformally flat and quasi conformally flat curvature tensor. It is shown that in both cases, the manifold is locally isometric with a sphere S-2n + 1 (c).
Yıldız, Ahmet
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A class of Lorentzian α-Sasakian manifolds
, 2009 In this study we consider φ-conformally flat, φ-conharmonically flat, φ-projectively flat and φ-concircularly flat Lorentzian α-Sasakian manifolds.
Murathan, Cengizhan, Turan M., Yildiz A.
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On invariant submanifolds of lorentzian para-sasakian manifolds
, 2009 We consider semiparallel and 2-semiparallel invariant submanifolds of Lorentzian para-Sasakian manifolds. We show that these submanifolds are totally geodesic. We also consider invariant submanifolds of Lorentzian para-Sasakian manifolds satisfying the conditions Z (X, Y) . alpha = 0 and Z (X, Y) . (del) over bar (alpha) = 0 with tau not equal n(n - 1).
Özgür, Cihan, Murathan, Cengizhan
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m - projective curvature tensor on a Lorentzian para – Sasakian manifolds
IOSR Journal of Mathematics, 2013 , = , + , , = ( ), , = , , , = ,
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On a Lorentzian Sasakian manifold endowed with a quarter-symmetric metric connection
, 2019 In the present paper, some results on a Lorentzian Sasakian manifold endowed with a quarter-symmetric metric connection have been ...
Haseeb Abdul +2 more
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Biharmonic curves in Lorentzian Para-Sasakian manifolds
, 2010 In this paper we give necessary and sucient conditions for space- like and timelike curves in a conformally at, quasi conformally at and conformally symmetric 4-dimensional Lorentzian Para-Sasakian (LP-Sasakian) manifold to be proper biharmonic. Also, we
Husna Zayadi
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Some results on invarinat submanifolds of lorentzian para-kenmotsu manifolds
, 2022 The purpose of this paper is to study invariant submanifolds of a Lorentzian para Kenmotsu manifold. We obtain the necessary and sufficient conditions for an invariant submanifold of a Lorentzian para Kenmotsu manifold to be totally geodesic.
Atçeken, Mehmet
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, 2019 In the present paper, some properties of concircular curvature tensor in a Lorentzian α-Sasakian manifold with respect to the quarter-symmetric non-metric connection have been ...
Prasad, Rajendra, Haseeb, Abdul
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On M-Projective Curvature Tensor of Lorentzian <i>α</i>-Sasakian Manifolds
, 2017 In this paper, we study the nature of Lorentzianα-Sasakian manifolds admitting M-projective curvature tensor. We show that M-projectively flat and irrotational M-projective curvature tensor of Lorentzian α-Sasakian manifolds are locally isometric to unit
D.G. Prakasha, Vasant Chavan
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