Almost Ricci–Bourguignon Solitons on Doubly Warped Product Manifolds [PDF]
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 +3 more
doaj +7 more sources
Investigating slant curves within Lorentzian doubly warped product manifolds. [PDF]
PLoS ONEThis 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 +3 more
doaj +6 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 +2 more
doaj +11 more sources
Poisson Doubly Warped Product Manifolds [PDF]
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 +2 more
doaj +4 more sources
DOUBLY WARPED PRODUCTS IN S-SPACE FORMS [PDF]
Romanian Journal of Mathematics and Computer Science, 2014 Recently, the author established a general inequality for doubly warped products in arbitrary Riemannian manifolds [14]. In the present paper, we obtain a similar inequality for doubly warped products isometrically immersed in S-space forms.
Andreea Olteanu
doaj +4 more sources
A Study of Doubly Warped Product Immersions in a Nearly Trans-Sasakian Manifold with Slant Factor [PDF]
Advances in Mathematical Physics, 2021 In this article, we discuss the de Rham cohomology class for bislant submanifolds in nearly trans-Sasakian manifolds. Moreover, we give a classification of warped product bislant submanifolds in nearly trans-Sasakian manifolds with some nontrivial ...
Ali H. Alkhaldi +3 more
doaj +3 more sources
Width estimate and doubly warped product [PDF]
Transactions of the American Mathematical Society, 2020 In this paper, we give an affirmative answer to Gromov's conjecture ([3, Conjecture E]) by establishing an optimal Lipschitz lower bound for a class of smooth functions on orientable open $3$-manifolds with uniformly positive sectional curvatures.
Jintian Zhu
semanticscholar +5 more sources
Einstein doubly warped product manifolds with semi-symmetric metric connection [PDF]
Acta Mathematica, 2020 In this paper, we study the doubly warped product manifolds with semi-symmetric metric connection. We derive the curvature formulas for doubly warped product manifold with semi-symmetric metric connection in terms of curvatures of components of doubly ...
Punam Gupta, Abdoul Salam Diallo
semanticscholar +6 more sources
Gradient Ricci-harmonic solitons on doubly warped product manifolds
Filomat, 2023 We give necessary and sufficient conditions for doubly warped product manifolds to be gradient Ricci-harmonic solitons. We also give a physical application for this kind of solitons.
Fatma Karaca, Cıhan Özgür
semanticscholar +5 more sources
Doubly warped product manifolds: Investigations through the projective curvature tensor and relativistic applications [PDF]
AIP AdvancesThis paper introduces a description of a doubly warped product manifold, taking into account certain conditions related to the projective curvature tensor.
Abdallah Abdelhameed Syied +3 more
doaj +3 more sources