Results 151 to 160 of about 5,765 (162)

Doubly Warped Product Manifolds and Submanifolds

AIP Conference Proceedings, 2004
In this report, we consider doubly warped product manifolds and we get fundamental properties of this manifold and consider these submanifolds.
openaire   +1 more source

Pseudoconvexity in Lorentzian doubly warped products

Geometriae Dedicata, 1991
A Lorentzian manifold M is said to be null (resp. causally) pseudoconvex if, given any compact set K in M, there exists a compact set K' in M such that any null (resp. causal) geodesic segment with both endpoints in K lies in K'. Various implications of causal and null pseudoconvexity on the geodesic structure of a Lorentzian manifold have been studied
openaire   +1 more source

Mixed doubly sequential warped product manifolds

Physica Scripta
Abstract 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. The study delves into the geometry of these manifolds by analyzing critical metrics, including curvature tensors, covariant derivatives,
H K Elsayied, A M Tawfiq, A Elsharkawy
openaire   +1 more source

CR-Doubly Warped Product Submanifolds

2016
This essay deals with CR-doubly warped product submanifolds in Sasakian space forms and in Kenmotsu space forms.
openaire   +1 more source

Geometric analysis of Riemannian doubly warped product submersions

Physica Scripta
Abstract This paper introduces the concept of Riemannian doubly warped product submersions as a natural generalization of Riemannian warped product submersions. We study some fundamental properties of such submersions and derived the conditions under which the Riemannian doubly warped product submersions have totally geodesic, totally ...
Richa Agarwal, Tanveer Fatima, Sarvesh Kumar Yadav, Shahid Ali   +3 more
openaire   +1 more source

On doubly warped product submanifolds of Generalized $(��,��)$-Space Forms

2013
In this paper we establish a general inequality involving the Laplacian of the warping functions and the squared mean curvature of any doubly warped product isometrically immersed in a Riemannian manifold. Moreover, we obtain some geometric inequalities for C-totally real doubly warped product submanifolds of generalized $( , )$-space forms.
Faghfouri, Morteza, Ghaffarzadeh, Narges
openaire   +1 more source

Doubly warped product CR-submanifolds in locally conformal Kähler manifolds

Monatshefte Fur Mathematik, 2007
Marian Ioan Munteanu
exaly  

On doubly warped product submanifolds of generalized $$(\kappa ,\mu )$$ ( κ , μ ) -space forms

Afrika Matematika, 2014
Morteza Faghfouri, Narges Ghaffarzadeh
exaly  

Geometry of Warped Product CR-Submanifolds in Kaehler Manifolds

Monatshefte Fur Mathematik, 2001
Bang-Yen Chen
exaly  

On doubly warped and doubly twisted product submanifolds

2010
openaire   +1 more source