Results 51 to 60 of about 2,217 (169)

Einstein like -para Sasakian manifolds

Kuwait Journal of Science, 2013
Einstein like  -para Sasakian manifolds are introduced. For an  -para Sasakian manifold to be Einstein like, a necessary and sufficient condition in terms of its curvature tensor is obtained.
SADIK KELES, EROL KILIC, MUKUT MANI TRIPATHI, SELCEN YÛKSEL PERKTAS   +3 more
doaj  

Einstein structure of four-manifolds

Journal of Geometry and Physics
v3: 27 pages, 1 figure, Sections 4 & 5 added; to appear in Journal of Geometry and ...
Jeongwon Ho, Kyung Kiu Kim, Hyun Seok Yang   +2 more
openaire   +2 more sources

Construction of an A-manifold on a principal torus bundle

Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2013
We construct a new example of an A-manifold, i.e. a Riemannian manifold with cyclic-parallel Ricci tensor. This condition can be viewed as a generalization of the Einstein condition.
Grzegorz Zborowski
doaj  

The Impact of Quasi-Conformal Curvature Tensor on Warped Product Manifolds

Axioms
This work investigates the effects on the factor manifolds of a singly warped product manifold resulting from the presence of a quasi-conformally flat, quasi-conformally symmetric, or divergence-free quasi-conformal curvature tensor.
Bang-Yen Chen, Sameh Shenawy, Uday Chand De, Alaa Rabie, Nasser Bin Turki   +4 more
doaj   +1 more source

7D supersymmetric Yang-Mills on curved manifolds

Journal of High Energy Physics, 2017
We study 7D maximally supersymmetric Yang-Mills theory on curved manifolds that admit Killing spinors. If the manifold admits at least two Killing spinors (Sasaki-Einstein manifolds) we are able to rewrite the supersymmetric theory in terms of a ...
Konstantina Polydorou, Andreas Rocén, Maxim Zabzine   +2 more
doaj   +1 more source

THE SPECTRAL GEOMETRY OF EINSTEIN MANIFOLDS WITH BOUNDARY [PDF]

Journal of the Korean Mathematical Society, 2004
Let (M,g) be a compact Einstein manifold with smooth boundary. We consider the spectrum of the p form valued Laplacian with respect to a suitable boundary condition. We show that certain geometric properties of the boundary may be spectrally characterized in terms of this data where we fix the Einstein constant.
openaire   +2 more sources

Super Quasi-Einstein Warped Products Manifolds with Respect to Affine Connections

Axioms
In this paper, we investigate warped products on super quasi-Einstein manifolds under affine connections. We explore their fundamental properties, establish conditions for their existence, and prove that these manifolds can also be nearly quasi-Einstein ...
Mohd Vasiulla, Mohabbat Ali, Meraj Ali Khan, Ibrahim Aldayel   +3 more
doaj   +1 more source

On Calabi's Inhomogeneous Einstein-Kaehler Manifolds [PDF]

Proceedings of the American Mathematical Society, 1977
We use some information on Lie groups to replace a long computation of Calabi, proving that certain complete Einstein-Kaehler manifolds are not locally homogeneous, and finding their isometry groups.
openaire   +2 more sources

Sphere Theorems for σ_k-Einstein Manifolds

Axioms
A problem that geometers have always been concerned with is when a closed manifold is isometric to a round sphere. A classical result shows that a closed locally conformally flat Einstein manifold is always isometric to a quotient of a round sphere.
Jingyang Zhong, Xinran Mu
doaj   +1 more source

Geometry Of Generalized Einstein Manifolds

Comptes Rendus. Mathématique, 2004
A formula linking the horizontal Laplacian Δ ¯ φ of a function φ on the fibre bundle W
openaire   +2 more sources