Results 81 to 90 of about 2,167 (137)

A Study on Trans-para-Sasakian Manifolds

Journal of Innovative Science and Engineering (JISE)
In the current paper, we make the first contribution to investigate conditions under which three-dimensional trans-para-Sasakian manifold has η-parallel Ricci tensor and cyclic parallel Ricci tensor.
Mustafa Özkan, İrem Küpeli Erken
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On the geometry of trans-para-Sasakian manifolds

Filomat, 2019
In this paper, we introduce the trans-para-Sasakian manifolds and we study their geometry. These manifolds are an analogue of the trans-Sasakian manifolds in the Riemannian geometry. We shall investigate many curvature properties of these manifolds and we shall give many conditions under which the manifolds are either ?-Einstein or Einstein
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SCREEN SLANT RADICAL TRANSVERSAL NULL SUBMANIFOLDS OF PARA-SASAKIAN MANIFOLDS [PDF]

, 2016
In our paper we introduce totally paracontact umbilical radical transversalnull submanifolds and screen slant radical transversal null submanifolds of para-Sasakian manifolds.
Acet, Bilal Eftal, Yüksel Perktas, Selcen   +1 more
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On Sectional Curvatures of (ε)-Sasakian Manifolds [PDF]

, 2007
We obtain some basic results for Riemannian curvature tensor of (ε)-Sasakian manifolds and then establish equivalent relations among φ-sectional curvature, totally real sectional curvature, and totally real bisectional curvature for (ε)-Sasakian ...
Rachna Rani, Rakesh Kumar, R. K. Nagaich   +2 more
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Degenerate Foliations in Sasakian Semi-Riemannian Manifolds

In the Semi-Riemannian case we do not have the liability of the existence of such a metric being a difference from the Riemannian case. A Semi-Riemannian manifold provided with a normal contact metric structure is called Sasakian manifold.Semi-Riemannian,
Catalin Angelo Ioan
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On a Type of Concircular '-recurrent Trans-Sasakian Manifolds

, 2016
[[abstract]]The object of the present paper is to study on a type of concircular '-recurrent trans-Sasakian ...
Dipankar Debnath
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Einstein like $(\varepsilon)$-para Sasakian manifolds

, 2012
Einstein like $(\varepsilon)$-para Sasakian manifolds are introduced. For an $(\varepsilon) $-para Sasakian manifold to be Einstein like, a necessary and sufficient condition in terms of its curvature tensor is obtained. The scalar curvature of an Einstein like $(\varepsilon) $-para Sasakian manifold is obtained and it is shown that the scalar ...
Keleş, Sadik, Kiliç, Erol, Tripathi, Mukut Mani, Perktaş, Selcen Yüksel   +3 more
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3-quasi-Sasakian manifolds

, 2008
In the present article we carry on a systematic study of 3-quasi-Sasakian manifolds. In particular, we prove that the three Reeb vector fields generate an involutive distribution determining a canonical totally geodesic and Riemannian foliation. Locally,
DILEO G., DILEO, GIULIA, De Nicola A, DE NICOLA, Antonio, Cappelletti Montano B, CAPPELLETTI MONTANO, BENIAMINO, Antonio De Nicola, Giulia Dileo, DILEO A., Beniamino Cappelletti Montano   +9 more
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A General Type of Almost Contact Manifolds

Among almost contact manifolds Sasakian manifolds, Kenmotsu manifolds (called also “a certain class of almost contact manifolds”) and cosymplectic manifolds have been studied by many authors.
Catalin Angelo Ioan
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A Note on Ricci Solitons on Para-Sasakian Manifolds

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
In the present paper, in an almost para-contact metric manifold, especially on para-Sasakian manifolds,  Ricci solitons were examined. Also, we consider the generalized quasi-conformal curvature tensor on a para-Sasakian manifold admitting Ricci soliton.
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