Results 51 to 60 of about 85,217 (188)

Clifford-Wolf Translations of Finsler spaces [PDF]

open access: yes, 2012
In this paper, we study Clifford-Wolf translations of Finsler spaces. We first give a characterization of Clifford-Wolf translations of Finsler spaces in terms of Killing vector fields.
Deng, Shaoqiang, Xu, Ming
core  

Jacobi fields and the stability of minimal foliations of arbitrary codimension

open access: yes, 2010
In this article, we investigate the stability of leaves of minimal foliations of arbitrary codimension. We also study relations between Jacobi fields and vector fields which preserves a foliation and we use these results to Killing ...
Andrzejewski, Krzysztof
core   +1 more source

Killing Vector Fields of Generic Semi-Riemannian Metrics

open access: yesMilan Journal of Mathematics, 2014
Let M be a smooth oriented connected n-dimensional manifold and let M be the space of pseudo-Riemannian metrics on M of a given signature (n+,n−),n++n−=n>1. A system of n metric invariants is attached to each metric in M, called the Ricci invariants, and by using the geometric properties of such invariants, the following result is proved: The subset O ...
Rosado María, María Eugenia   +2 more
openaire   +3 more sources

On a Relation Between Twistors and Killing Spinors

open access: yesCumhuriyet Science Journal, 2018
Inspiring from the consequence of constructingconformal Killing-Yano forms out of Killing-Yano forms and closed conformalKilling-Yano forms, this work includes a method for building up twistors fromKilling spinors which can be analogously interpreted as ...
Özgür Açık
doaj   +1 more source

Gauge Theories in Noncommutative Homogeneous K\"ahler Manifolds

open access: yes, 2014
We construct a gauge theory on a noncommutative homogeneous K\"ahler manifold, where we employ the deformation quantization with separation of variables for K\"ahler manifolds formulated by Karabegov.
Akifumi Sako   +6 more
core   +1 more source

Generalizations of Killing vector fields in sol space [PDF]

open access: yesFilomat, 2019
We consider two generalizations of the Killing vector fields in the 3D Sol space. Conformal Killing vector fields are the first generalization, 2-Killing vector fields are the second. We characterize proper conformal Killing vector fields and determine some proper 2-Killing vector fields in Sol space.
openaire   +5 more sources

On the structure vector field of a real hypersurface in complex quadric

open access: yesOpen Mathematics, 2018
From the notion of Jacobi type vector fields for a real hypersurface in complex quadric Qm we prove that if the structure vector field is of Jacobi type it is Killing when the real hypersurface is either Hopf or compact.
Dios Pérez Juan de
doaj   +1 more source

On some non-static plane symmetric perfect fluid solutions in f(R,T) gravity

open access: yesResults in Physics, 2022
We address the problem of finding non-static plane symmetric perfect fluid solutions in the f(R,T)theory of gravity, where R and T respectively are the Ricci scalar and trace of the energy momentum tensor.
Abu Bakr Mehmood   +5 more
doaj   +1 more source

Ricci Solitons and Generalized Ricci Solitons Whose Potential Vector Fields Are Jacobi-Type

open access: yesJournal of Mathematics
This paper is devoted to Ricci solitons admitting a Jacobi-type vector field. First, we present some rigidity results for Ricci solitons Mn,g,V,λ admitting a Jacobi-type vector field ξ and provide conditions under which ξ is Killing.
Vahid Pirhadi   +2 more
doaj   +1 more source

Black hole solutions in the quadratic Weyl conformal geometric theory of gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We consider numerical black hole solutions in the Weyl conformal geometry and its associated conformally invariant Weyl quadratic gravity. In this model, Einstein gravity (with a positive cosmological constant) is recovered in the spontaneously broken ...
Jin-Zhao Yang   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy