Results 81 to 90 of about 13,990,992 (117)
Pointwise slant semi-riemannian submersions from lorentzian para-sasakian manifolds
, 2019 The purpose of this paper is to study pointwise slant semi-Riemannian submersions from Lorentzian paraSasakian manifolds. Several basic results in this point of view are proven in this paper. Definition 1. Let F be a semi-Riemannian submersion from a Lorentzian (para) contact manifold (M, ?, ?, ?, gM) of dimension (2m+ 1) onto (N, gN ) be a Lorentzian ...
Mashmouli, Sahar, Faghfouri, Morteza
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Non-existence of CR-warped Product Submanifolds of Nearly Lorentzian Para-Sasakian Manifolds
Turkish Journal of Mathematics and Computer ScienceWe introduce the definition of the nearly Lorentzian para-Sasakian condition, and we show the non-existence of proper CR-warped product submanifolds in a nearly Lorentzian para-Sasakian manifold.
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, 2009 The object of the present paper is to study three-dimensional Lorentzian alpha-Sasakian manifolds which are Ricci-semisymmetry, locally phi-symmetric and have eta-parallel Ricci tensor. An example of a three-dimensional Lorentzian alpha-Sasakian manifold
Yildiz, Ahmet +2 more
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On a Lorentzian para-Sasakian manifold with respect to the quarter-symmetric metric connection
Novi Sad Journal of Mathematics, 2016 Prasad, Rajendra, Haseeb, Abdul
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On some classes of concircular curvature tensor on Lorentzian para-Sasakian manifolds
Journal of Mathematical and Computational Science, 2019 openaire +1 more source
Characterization of the Lorentzian para-Sasakian manifolds admitting a quarter-symmetric non-metric connectionopenaire +1 more source
ON (ϵ)-LORENTZIAN PARA-SASAKIAN MANIFOLDS
Communications of the Korean Mathematical Society, 2012 In this paper we study (ϵ)-Lorentzian para-Sasakian mani- folds and show its existence by an example. Some basic results regarding such manifolds have been deduced. Finally, we study conformally at and Weyl-semisymmetric (ϵ)-Lorentzian para-Sasakian manifolds.
Rajendra Prasad, Vibha Srivastava
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Semi-invariant submanifolds of Lorentzian Sasakian manifolds
Demonstratio Mathematica, 2011 In this paper we introduce the notion of semi-invariant submanifolds of a Lorentzian almost contact manifold. We study their principal characteristics and the particular cases in which the manifold is a Lorentzian Sasakian manifold or a Lorentzian ...
Pablo Alegre
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Slant Curves and Contact Magnetic Curves in Sasakian Lorentzian 3-Manifolds
Symmetry, 2019 In this article, we define Lorentzian cross product in a three-dimensional almost contact Lorentzian manifold. Using a Lorentzian cross product, we prove that the ratio of κ and τ − 1 is constant along a Frenet slant curve ...
Ji-Eun Lee
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CURVATURE TENSORS IN A LORENTZIAN PARA SASAKIAN MANIFOLD
Quaestiones Mathematicae, 1996Abstract The author and Mishra [1] have introduced some curvature tensors to study their relativistic and geometric properties. Matsumoto and Mihai [2] have introduced the notion of Lorentzian para Sasakian (LP-Sasakian) and studied certain transformations. In this paper some properties of curvature tensors, in a LP-Sasakian manifold, are studied.
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