Results 41 to 50 of about 218 (125)

Quasi-Concircular Curvature Tensor on Generalized Sasakian Space-Forms

Turkish Journal of Mathematics and Computer Science, 2023
The object of the present paper is to study Quasi-concircularly flat and $\phi-$quasi-concircularly flat generalized Sasakian-space-forms. Also, we consider generalized Sasakian-space-forms satisfying the condition $P(\xi, X).\widetilde{V}=0,\ \widetilde{V}(\xi, X).P=0, \ $ and $\widetilde{V}(\xi, X).\widetilde{V}=0$ and we obtain some important ...
Rana Pratap Singh YADAV, Bhagwat PRASAD
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Certain Curvature Conditions on Kenmotsu Manifolds and 🟉-η-Ricci Solitons

Axioms, 2023
The present paper deals with the investigations of a Kenmotsu manifold satisfying certain curvature conditions endowed with 🟉-η-Ricci solitons. First we find some necessary conditions for such a manifold to be φ-Einstein. Then, we study the notion of 🟉-η-
Halil İbrahim Yoldaş, Abdul Haseeb, Fatemah Mofarreh   +2 more
doaj   +1 more source

Generalized Quasi-Einstein Manifolds in Contact Geometry

Mathematics, 2020
In this study, we investigate generalized quasi-Einstein normal metric contact pair manifolds. Initially, we deal with the elementary properties and existence of generalized quasi-Einstein normal metric contact pair manifolds.
İnan Ünal
doaj   +1 more source

Some Properties of Generalized Einstein Tensor for a Pseudo‐Ricci Symmetric Manifold

Advances in Mathematical Physics, Volume 2020, Issue 1, 2020., 2020
The object of the paper is to study some properties of the generalized Einstein tensor G(X, Y) which is recurrent and birecurrent on pseudo‐Ricci symmetric manifolds (PRS)n. Considering the generalized Einstein tensor G(X, Y) as birecurrent but not recurrent, we state some theorems on the necessary and sufficient conditions for the birecurrency tensor ...
S. Aynur Uysal, Hülya Bağdatlı Yılmaz, Stephen C. Anco   +2 more
wiley   +1 more source

Generalized Sasakian space forms on w0-curvature tensor

, 2023
In this article, generalized Sasakian space forms are investi-gated on W0-curvature tensor. Characterizations of generalized Sasakian space forms are obtained on W0-curvature tensor.
Mert, Tuğba, Atçeken, Mehmet
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Concircular curvature on warped product manifolds and applications

, 2020
This study aims mainly at investigating the effects of concircular flatness and concircular symmetry of a warped product manifold on its fiber and base manifolds.
Shenawy, S., Ünal, Bülent, De, U. C.
core   +1 more source

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

International 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

Curvature and Solitonic Structures of Para‐Sasakian Manifolds With Schouten–van Kampen Connection on the Tangent Bundle

Journal of Mathematics, Volume 2026, Issue 1, 2026.
This paper investigates the complete lift of para‐Sasakian structures to the tangent bundle equipped with the Schouten–van Kampen connection (SVKC). By analyzing curvature tensors and soliton equations, we establish the existence of Ricci, Yamabe, and η‐Ricci solitons in the lifted setting.
Lalnunenga Colney, Dalal Alhwikem, Teg Alam, Murat Altunbaş   +3 more
wiley   +1 more source

On Generalized ϕ‐Recurrent (ϵ, δ)‐Trans‐Sasakian Manifolds

Chinese Journal of Mathematics, Volume 2014, Issue 1, 2014., 2014
We study generalized ϕ‐recurrent (ϵ, δ)‐trans‐Sasakian manifolds. A relation between the associated 1‐forms A and B and relation between characteristic vector field ξ and the vector fields ρ1, ρ2 for a generalized ϕ‐recurrent.
C. S. Bagewadi, Dakshayani A. Patil, P. Li, C. Yin   +3 more
wiley   +1 more source

On geodesic mappings preserving the Einstein tensor [PDF]

, 2010
summary:In this paper there are discussed the geodesic mappings which preserved the Einstein tensor. We proved that the tensor of concircular curvature is invariant under Einstein tensor-preserving geodesic ...
Kiosak, Volodymyr A., Mikeš, Josef, Chepurna, Olena E.   +2 more
core   +1 more source