Results 11 to 20 of about 1,301 (144)

Almost Kenmotsu $f$-manifolds

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2015
In this paper, we consider a generalization of almost Kenmotsu f-manifolds. We get basic Riemannian curvature, sectional curvatures and scalar curvature properties such type manifolds. Finally, we give two examples to clarify some our results.
Y.S. Balkan, N. Aktan
doaj   +3 more sources

η-Ricci solitons in Kenmotsu manifolds

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2019
The object of the present paper is to study generalized weakly symmetric and generalized weakly Ricci symmetric Kenmotsu manifolds whose metric tensor is η-Ricci soliton. The paper also aims to bring out curvature conditions for which η-Ricci solitons in
Baishya Kanak Kanti   +1 more
doaj   +3 more sources

η-Ricci Solitons on Kenmotsu 3-Manifolds [PDF]

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
In the present paper we study η-Ricci solitons on Kenmotsu 3-manifolds. Moreover, we consider η-Ricci solitons on Kenmotsu 3-manifolds with Codazzi type of Ricci tensor and cyclic parallel Ricci tensor.
De Krishnendu, De Uday Chand
doaj   +3 more sources

Invariant Submanifolds of a Lorentzian β-Kenmotsu Manifold

open access: yesAmesia
In this paper we have investigated invariant submanifolds of Lorentzian β-Kenmotsu manifolds and obtained the necessary and sufficient conditions for total geodesic submanifolds of Lorentzian β-Kenmotsu manifolds.
Tuğba Mert, Mehmet Atçeken
doaj   +2 more sources

Optimization of Soliton Structures Using Lifting Theory on Tangent Bundles of Statistical Kenmotsu Manifolds

open access: yesJournal of Mathematics
This paper investigates the optimization of soliton structures on tangent bundles of statistical Kenmotsu manifolds through lifting theory. By constructing lifted statistical Kenmotsu structures using semisymmetric metric and nonmetric connections, we ...
Mohammad Nazrul Islam Khan   +2 more
doaj   +2 more sources

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

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   +2 more sources

Ricci Solitons in β-Kenmotsu Manifolds [PDF]

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
The object of the present paper is to study Ricci soliton in β-Kenmotsu manifolds. Here it is proved that a symmetric parallel second order covariant tensor in a β-Kenmotsu manifold is a constant multiple of the metric tensor.
Kumar Rajesh
doaj   +3 more sources

SOME NOTES ON KENMOTSU MANIFOLD [PDF]

open access: yesFacta Universitatis, Series: Mathematics and Informatics, 2021
In the present paper, we deal with a Kenmotsu manifold $M$. Firstly, we study the notion of torse-forming vector field on such a manifold. Then, we investigate some curvature conditions such as $Q.\mathcal{M}=0$ and $C.Q=0$ on such a manifold and obtain some necessary conditions for such a manifold given as to be Einstein and $\eta-$Einstein.
Yoldaş, Halil İbrahim, Yaşar, Erol
openaire   +2 more sources

Almost Kenmotsu Manifolds

open access: yesCommunications in Mathematics, 2023
The object of this paper is to study generalized φ-recurrent almost Kenmotsu manifolds with characteristic vector field ξ belonging to (k, µ)-nullity distribution. We have showed that these manifolds reduce to Kenmotsu manifolds with scalar curvature-1.
Nagaraja, H., Manjulamma, Uppara
openaire   +3 more sources

The critical point equation on Kenmotsu and almost Kenmotsu manifolds [PDF]

open access: yesPublicationes Mathematicae Debrecen, 2020
arXiv admin note: text overlap with arXiv:1701 ...
Patra, Dhriti Sundar   +2 more
openaire   +2 more sources

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