Results 71 to 80 of about 171 (132)

Sasaki-Kenmotsu manifolds

open access: yes, 2022
In the present paper, we introduce a new class of structures on an even dimensional differentiable Riemannian manifold which combines, well known in literature, the Sasakian and Kenmotsu structures simultaneously. The structure will be called a Sasaki-Kenmotsu structure by us.
Beldjilali, Gherici, Gezer, Aydın
openaire   +1 more source

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

On Submanifolds of $N(k)$-Quasi Einstein Manifolds with a Type of Semi-Symmetric Metric Connection

open access: yesUniversal Journal of Mathematics and Applications, 2020
In this study, we consider the $ N(k)- $quasi Einstein manifolds with respect to a type of semi-symmetric metric connection. We suppose that the generator of $ N(k)- $quasi-Einstein manifolds is parallel with respect to semi-symmetric metric connection
İnan Ünal
doaj   +1 more source

Nearly Kahler and nearly Kenmotsu manifolds

open access: yesTURKISH JOURNAL OF MATHEMATICS, 2018
Summary: We study the class of strict nearly Kenmotsu manifolds and prove that there is no Einstein manifold or locally symmetric or locally \(\phi\)-symmetric in this class of manifolds. We describe strict nearly Kenmotsu manifolds in low dimensions.
Heidari, Nikrooz   +2 more
openaire   +2 more sources

On Locally $ϕ$-semisymmetric Kenmotsu Manifolds

open access: yes, 2017
The object of the present paper is to study the locally $ϕ$- semisymmetric Kenmotsu manifolds along with the characterization of such notion.
Shaikh, Absos Ali, Akbar, Ali
openaire   +2 more sources

On The Ricci Symmetry of Almost Kenmotsu Manifolds

open access: yesTamkang Journal of Mathematics, 2021
In the present paper, we characterize Ricci symmetric almost Kenmotsu manifolds under several constraints and proved that they are Einstein manifolds. As a consequence, we obtain several corollaries. Finally, an illustrative example is presented to verify our results.
openaire   +2 more sources

Basic Inequalities for Submanifolds of Conformal Kenmotsu Manifolds

open access: yesMathematics
In this paper, we have established some basic inequalities for the submanifolds of conformal Kenmotsu manifolds. As an application, we have also derived the same inequalities for the θ-slant submanifolds of conformal Kenmotsu manifolds.
Qiming Zhao   +4 more
doaj   +1 more source

Pointwise Slant and Pointwise Semi-Slant Submanifolds in Almost Contact Metric Manifolds

open access: yesMathematics, 2020
In almost contact metric manifolds, we consider two kinds of submanifolds: pointwise slant, pointwise semi-slant. On these submanifolds of cosymplectic, Sasakian and Kenmotsu manifolds, we obtain characterizations and study their topological properties ...
Kwang Soon Park
doaj   +1 more source

Some Geometric Properties of Lorentzian $\beta$-Kenmotsu Manifolds Admitting $\eta$-Ricci-Yamabe Solitons

open access: yesCommunications in Advanced Mathematical Sciences
In this paper, we investigate the characterization of Lorentzian $\beta $-Kenmotsu manifolds admitting $\eta$-Ricci-Yamabe solitons. First, we examine the cases where such manifolds are Ricci pseudosymmetric and Ricci semisymmetric.
Mehmet Atçeken, Tuğba Mert
doaj   +1 more source

*-Ricci soliton on (κ, μ)′-almost Kenmotsu manifolds

open access: yesOpen Mathematics, 2019
Let (M, g) be a non-Kenmotsu (κ, μ)′-almost Kenmotsu manifold of dimension 2n + 1. In this paper, we prove that if the metric g of M is a *-Ricci soliton, then either M is locally isometric to the product ℍn+1(−4)×ℝn or the potential vector field is ...
Dai Xinxin, Zhao Yan, Chand De Uday
doaj   +1 more source

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