Results 11 to 20 of about 2,888 (257)

Conformal vector fields in symmetric and conformal symmetric spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1989
Consequences of the existence of conformal vector fields in (locally) symmetric and conformal symmetric spaces, have been obtained. An attempt has been made for a physical interpretation of the consequences in the framework of general relativity.
Ramesh Sharma
doaj   +3 more sources

Closed conformal vector fields on pseudo-Riemannian manifolds [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We give here a geometric proof of the existence of certain local coordinates on a pseudo-Riemannian manifold admitting a closed conformal vector field.
D. A. Catalano
doaj   +3 more sources

Conformal Vector Fields and Null Hypersurfaces

open access: yesResults in Mathematics, 2022
Abstract We give conditions for a conformal vector field to be tangent to a null hypersurface. We particularize to two important cases: a Killing vector field and a closed and conformal vector field. In the first case, we obtain a result ensuring that a null hypersurface is a Killing horizon.
Cyriaque Atindogbé, Benjamín Olea
openaire   +3 more sources

Bi-conformal vector fields and their applications [PDF]

open access: yesClassical and Quantum Gravity, 2004
Replaced version with some changes in the terminology and a new theorem.
García-Parrado, Alfonso   +1 more
openaire   +3 more sources

On the Geometry of Orbits of Conformal Vector Fields

open access: yesJournal of Geometry and Symmetry in Physics, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Narmanov, Abdigappar, Rajabov, Eldor
openaire   +3 more sources

Generalized Minkowski Type Integral Formulas for Compact Hypersurfaces in Pseudo-Riemannian Manifolds

open access: yesMathematics, 2023
We obtain some generalized Minkowski type integral formulas for compact Riemannian (resp., spacelike) hypersurfaces in Riemannian (resp., Lorentzian) manifolds in the presence of an arbitrary vector field that we assume to be timelike in the case where ...
Norah Alessa, Mohammed Guediri
doaj   +1 more source

Pseudo-Riemannian Lie groups admitting left-invariant conformal vector fields

open access: yesComptes Rendus. Mathématique, 2020
Let $G$ be a Lorentzian Lie group or a pseudo-Riemannian Lie group of type $(n-2,2)$. If $G$ admits a non-Killing left-invariant conformal vector field, then $G$ is solvable.
Zhang, Hui, Chen, Zhiqi
doaj   +1 more source

Partition functions of higher derivative conformal fields on conformally related spaces

open access: yesJournal of High Energy Physics, 2021
The character integral representation of one loop partition functions is useful to establish the relation between partition functions of conformal fields on Weyl equivalent spaces.
Jyotirmoy Mukherjee
doaj   +1 more source

A classification of conformal vector fields on the tangent bundle

open access: yesUkrains’kyi Matematychnyi Zhurnal, 2020
UDC 514.7 Let ( M , g ) be a Riemannian manifold and T M be its tangent bundle equipped with a Riemannian (or pseudo-Riemannian) lift metric derived from g .  We give a classification of infinitesimal fibre-preserving conformal transformations on the tangent bundle.
Zohre Raei, Dariush Latifi
openaire   +2 more sources

Ricci Bi-Conformal Vector Fields on Siklos Spacetimes [PDF]

open access: yesMathematics Interdisciplinary Research
‎Ricci bi-conformal vector fields have find their place in geometry as well as in physical applications‎. ‎In this paper‎, ‎we consider the Siklos spacetimes and we determine all the Ricci bi-conformal vector fields on these spaces‎.
Shahroud Azami   +1 more
doaj   +1 more source

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