Results 41 to 50 of about 549 (94)

On Almost C(α)-Manifold Satisfying Certain Curvature Conditions

open access: yesCumhuriyet Science Journal
This research article is about the geometry of the almost C(α)- manifold. Some important properties of the almost C(α)- manifold with respect to the W_3- curvature tensor, such as W_3-flat and W_3- semi-symmetry, are investigated.
Pakize Uygun   +2 more
doaj   +1 more source

Study of η-einstein soliton on α-sasakian manifold admitting schouten-van kampen connection [PDF]

open access: yesJournal of Hyperstructures
The purpose of the present paper is to study some properties of α -Sasakian manifolds with respect to Schouten-van Kampen connection. We study η-Einstein soliton on pseudo-projectively flat α-Sasakian manifolds with respect to Schouten-van Kampen ...
Abhijit Mandal   +5 more
doaj   +1 more source

Sequential Warped Products: Curvature and Killing Vector Fields

open access: yes, 2019
In this note, we introduce a new type of warped products called as sequential warped products to cover a wider variety of exact solutions to Einstein's equation. First, we study the geometry of sequential warped products and obtain covariant derivatives,
De, Uday Chand   +2 more
core   +2 more sources

Kenmotsu Manifolds with Conservative Conformal Concircular and Conharmonic Curvature Tensors

open access: yesMapana - Journal of Sciences, 2004
We study the geometry of Kenmotsu manifolds when the conformal, con circular and con harmonic curvature tensors are conservative.
N. B. Gatti, C. S. Bagewadi
openaire   +2 more sources

Some solitons on anti-invariant submanifold of LP-Kenmotsu manifold admitting Zamkovoy connection [PDF]

open access: yesJournal of Hyperstructures
In this paper we prove some curvature properties of anti-invariant submanifold of Lorentzian para-Kenmotsu manifold (briefly, LP-Kenmotsu manifolds) with respect to Zamkovoy connection (∇∗).
Abhijit Mandal, Meghlal Mallik
doaj   +1 more source

IDEAL characterization of isometry classes of FLRW and inflationary spacetimes

open access: yes, 2018
In general relativity, an IDEAL (Intrinsic, Deductive, Explicit, ALgorithmic) characterization of a reference spacetime metric $g_0$ consists of a set of tensorial equations $T[g]=0$, constructed covariantly out of the metric $g$, its Riemann curvature ...
Canepa, Giovanni   +2 more
core   +1 more source

Symmetry and pseudosymmetry properties with Ricci soliton of the Reissner-Nordström-de Sitter spacetime

open access: yesNuclear Physics B
The primary objective of the article is to investigate the symmetry and pseudosymmetry properties of the Reissner-Nordström-de Sitter (briefly, RNdS) spacetime. The secondary aim of the paper is to explore the notion of Ricci solitons in RNdS spacetimes.
Absos Ali Shaikh, Kamiruzzaman
doaj   +1 more source

On pseudosymmetric manifolds

open access: yes, 2015
In the literature, there are two different notions of pseudosymmetric manifolds, one by Chaki [7] and other by Deszcz [16], and there are many papers related to these notions.
Deszcz, Ryszard   +4 more
core   +1 more source

On the conharmonic and concircular curvature tensors of almost C($\lambda $) Manifolds

open access: yesInternational Journal of Advanced Mathematical Sciences, 2013
The object of the present paper is to characterize certain curvature conditions on conharmonic and concircular curvature tensors on almost C($\lambda $) manifolds. In this paper we study conharmonically flat, $\xi $-conharmonically flat, concircularly flat and $\xi $-concircularly flat almost C($\lambda $) manifolds.
Ali Akbar, Avijit Sarkar
openaire   +2 more sources

On a Lorentzian Sasakian manifold endowed with a quarter-symmetric metric connection

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2019
In the present paper, some results on a Lorentzian Sasakian manifold endowed with a quarter-symmetric metric connection have been studied.
Prasad Rajendra   +2 more
doaj   +1 more source

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