Results 251 to 260 of about 93,031 (274)

Conformal vector fields and σk-scalar curvatures

Pacific Journal of Mathematics, 2022
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Xu, Xingwang, Ye, Jian
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Zeros of conformal vector fields

Classical and Quantum Gravity, 1997
The authors study the behaviour of a conformal vector field \(X\) on a spacetime in the neighbourhood of a zero of \(X\).
Hall, G. S., Capocci, M. S., Beig, R.
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On $\phi$-skew symmetric conformal vector fields

Publicationes Mathematicae Debrecen, 2001
Summary: The notion of the \(J\)-skew symmetric vector field was introduced by \textit{I. Mihai, L. Nicolescu} and \textit{R. Rosca} [Port. Math. 54, 215-228 (1997; Zbl 0880.53029)]. In the present paper, we deal with \(\varphi\)-skew symmetric conformal vector fields on a Kenmotsu manifold \(M(\varphi,\Omega,\eta,\xi,g)\).
Naitza, Dorotea, Oiagă, Adela
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Essential conformal vector fields

Classical and Quantum Gravity, 1999
The author deduces the necessary and sufficient condition for a conformal Killing vector field on a pseudo-Riemannian manifold \((M,g)\) to be homothetic or even a Killing vector field with respect to a locally defined metric conformally related to \(g\).
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Conformal Vector Fields on Finsler Warped Product Manifolds

Acta Mathematica Sinica, English Series, 2023
The authors study Finsler manifolds which are equipped with a special form of Finsler metric known as Finsler warped product metric, and investigate conformal vector fields on such manifolds. They obtain a system of equivalent equations in Theorem 1.1 that the conformal vector fields on Finsler warped product manifolds satisfy and which completely ...
Zhang, Xiao Ling, Feng, Ya Lu
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Conformal Vector Fields and Conformal–Type Collineations in Space-Times

General Relativity and Gravitation, 2000
This article discusses the existence of homothetic and conformal vector fields in spacetimes with a Killing symmetry. The study of Weyl invariants along the integral curves of the conformal vector fields leads to restrictions for the existence of such fields. A non-existence theorem for proper conformal fields in spacetimes of certain Petrov classes is
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Conformal vector fields on Finsler manifolds

International Journal of Mathematics, 2020
In this paper, we give an equivalent characterization of conformal vector fields on a Finsler manifold [Formula: see text], whose metric [Formula: see text] is defined by a Riemannian metric [Formula: see text] and a 1-form [Formula: see text]. This characterization contains all related results in [Z. Shen and Q.
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Conformal vector fields on Kaehler manifolds

ANNALI DELL'UNIVERSITA' DI FERRARA, 2011
The author studies analytic conformal vector fields on non-compact Kähler manifolds \(M\) and looks for necessary conditions in order that such objects become Killing vector fields. The main results of the paper prove that two such additional hypothesis are: (i) \(\dim M \neq 4\) ; \(M\) has constant nowhere vanishing scalar curvature.
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Affine conformal vector fields

2020
oz AFİN KONFORM VEKTÖR ALANLARI Güzelgöz, M. Işık Yüksek Lisans, Matematik Bölümü Tez Yöneticisi : Prof. Dr. Cem Tezer Haziran 1996, 30 sayfa Bu çalışmanın amacı, yarı-Riemann uzaylar üzerinde verilmiş afin konform vektör alanlarının (ACV 1er) temel özelliklerini, bilhassa konform Killing vektör alanlarının (CKV lerin) teşkil ettiği alt sınıfı göz ...
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Characterizing spheres by conformal vector fields

ANNALI DELL'UNIVERSITA' DI FERRARA, 2010
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