Results 1 to 10 of about 172 (147)

Poisson Doubly Warped Product Manifolds

Mathematics, 2023
This article generalizes some geometric structures on warped product manifolds equipped with a Poisson structure to doubly warped products of pseudo-Riemannian manifolds equipped with a doubly warped Poisson structure.
Ibrahim Al-Dayel, Foued Aloui, Sharief Deshmukh   +2 more
doaj   +4 more sources

Almost Ricci–Bourguignon Solitons on Doubly Warped Product Manifolds

Universe, 2023
This study aims at examining the effects of an almost Ricci–Bourguignon soliton structure on the base and fiber factor manifolds of a doubly warped product manifold.
Sameh Shenawy, Nasser Bin Turki, Noha Syied, Carlo Mantica   +3 more
doaj   +4 more sources

Investigating slant curves within Lorentzian doubly warped product manifolds. [PDF]

PLoS ONE
This study investigates the application of Robertson-Walker space in the analysis of slant curves. The study classifies all slant curves and calculates their curvature and torsion.
Ayman Elsharkawy, Hoda Elsayied, Abdelrhman Tawfiq, Fatimah Alghamdi   +3 more
doaj   +4 more sources

Contravariant Curvatures of Doubly Warped Product Poisson Manifolds

Mathematics
In this paper, we investigate the sectional contravariant curvature of a doubly warped product manifold ( fB×bF,g˜,Π=ΠB+ΠF) equipped with a product Poisson structure Π, using warping functions and sectional curvatures of its factor manifolds (B,g˜B,ΠB ...
Foued Aloui, Shyamal Kumar Hui, Ibrahim Al-Dayel   +2 more
doaj   +4 more sources

Gradient Solitons on Doubly Warped Product Manifolds

Reports on Mathematical Physics, 2022
Firstly we provide new characterizations for doubly warped product manifolds. Then we consider several types of gradient solitons on them such as Riemann, Ricci, Yamabe and conformal and examine the effect of a gradient soliton on a doubly warped product to its factor manifolds.
Adara M Blaga
exaly   +5 more sources

On doubly warped product Finsler manifolds [PDF]

Nonlinear Analysis: Real World Applications, 2012
In this paper, we introduce horizontal and vertical warped product Finsler manifold. We prove that every C-reducible or proper Berwaldian doubly warped product Finsler manifold is Riemannian. Then, we find the relation between Riemmanian curvatures of doubly warped product Finsler manifold and its components, and consider the cases that this manifold ...
Esmaeil Peyghan, Akbar Tayebi
exaly   +3 more sources

Killing and 2-Killing Vector Fields on Doubly Warped Products

Mathematics, 2023
We provide a condition for a 2-Killing vector field on a compact Riemannian manifold to be Killing and apply the result to doubly warped product manifolds.
Adara M. Blaga, Cihan Özgür
doaj   +3 more sources

On doubly warped product immersions [PDF]

Journal of Geometry, 2014
In this paper we study fundamental geometric properties of doubly warped product immersion which is an extension of warped product immersion. Moreover, we study geometric inequality for doubly warped products isometrically immersed in arbitrary Riemannian manifolds.
Morteza Faghfouri
exaly   +3 more sources

Conformal Vector Fields on Doubly Warped Product Manifolds and Applications [PDF]

Advances in Mathematical Physics, 2016
This article aimed to study and explore conformal vector fields on doubly warped product manifolds as well as on doubly warped spacetime. Then we derive sufficient conditions for matter and Ricci collineations on doubly warped product manifolds.
H. K. El-Sayied, Sameh Shenawy, Noha Syied   +2 more
doaj   +4 more sources

Levi-Civita Ricci-Flat Doubly Warped Product Hermitian Manifolds

Advances in Mathematical Physics, 2022
Let M1,g and M2,h be two Hermitian manifolds. The doubly warped product (abbreviated as DWP) Hermitian manifold of M1,g and M2,h is the product manifold M1×M2 endowed with the warped product Hermitian metric G=f22g+f12h, where f1 and f2 are positive ...
Qihui Ni, Yong He, Jinhua Yang, Hui Zhang   +3 more
doaj   +2 more sources