Results 151 to 160 of about 14,568 (187)

𝜁 (Ric)-vector fields on doubly warped product manifolds

Istanbul Journal of Mathematics, 2023
We investigate 𝜁 (Ric)-vector fields on doubly warped product manifolds. We obtain some results when the vector field is also 𝜁 (Ric) on factor manifolds.We prove that if a vector field is a 𝜁 (Ric)-vector field on a doubly warped product manifold, it is also a 𝜁 (Ric)-vector field on the factor manifolds under certain conditions.
Sibel Gerdan Aydin, Moctar Traore, H. Taştan   +2 more
semanticscholar   +3 more sources

S-curvature of Doubly Warped Product of Finsler Manifolds

Acta Mathematica Sinica, English Series, 2020
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Zhao Yang, Yong He, Xiao Zhang
semanticscholar   +2 more sources

Mixed doubly sequential warped product manifolds

Physica Scripta
This research aims to expand the understanding of solutions to Einstein’s field equations by introducing a new class of warped product manifolds, specifically mixed doubly sequential manifolds.
Hoda Elsayied, A. Tawfiq, A. Elsharkawy
semanticscholar   +2 more sources

CR-Doubly Warped Product Submanifolds

, 2016
This essay deals with CR-doubly warped product submanifolds in Sasakian space forms and in Kenmotsu space forms.
Andreea Olteanu
semanticscholar   +2 more sources

On doubly warped product of complex finsler manifolds

Acta Mathematica Scientia, 2016
Abstract Let ( M 1 , F 1 ) and ( M 2 , F 2 ) be two strongly pseudoconvex complex Finsler manifolds. The doubly wraped product complex Finsler manifold ( f 2 M 1 × f 1 M 2 , F ) of ( M 1 , F 1 ) and ( M 2 , F 2 ) is the product manifold M 1 × M 2 endowed with the warped product complex Finsler metric F 2 = f 2 2 F 1
Yong He, Chunping Zhong
semanticscholar   +2 more sources

Foliations of doubly warped products by k-umbilical hypersurfaces

Annali di Matematica Pura ed Applicata (1923 -), 2022
A \(k\)-umbilical hypersurface \(\Sigma\) of a Lorentzian manifold \(M^{n+1}\) is a hypersurface having \(k\) equal principal curvatures at each point for some integer \(k \in \{1, \dots , n\}\). When \(k=n\), the surface \(\Sigma\) is simply said to be umbilical. \textit{S. Montiel} [Math. Ann. 314, No.
A. Gervasio Colares, Oscar Palmas
openaire   +2 more sources

Doubly warped product Hermitian manifold with constant holomorphic sectional curvature

Analysis
Let ( M 1 , g ) (M_{1},g) and ( M 2 , h ) (M_{2},h) be two Hermitian manifolds. Then the doubly warped product (abbreviated as DWP) Hermitian manifold of ( M 1 , g ) (M_{1},g) and ( M 2 , h ) (M_{2},h) is the product manifold M 1 × M 2 M_{1}\times M_{2 ...
Hui Zhang, Yong He, Weina Lu, Xiaohui Xu
semanticscholar   +1 more source

Doubly warped product manifolds with the structure of hyperbolic Ricci solitons

Physica Scripta
In this paper we study hyperbolic Ricci solitons on doubly warped product manifolds. The necessary conditions are obtained for a hyperbolic Ricci soliton with the structure of a doubly warped product to be an Einstein manifold when we consider the ...
Dilek Açıkgöz Kaya
semanticscholar   +1 more source