关于Finsler流形切缝束的自然对称性

Q2 Mathematics
Mohamed Tahar Kadaoui Abbassi, Abderrahim Mekrami
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引用次数: 0

摘要

本文介绍了芬斯勒流形狭切线束上的一大类度量,称为 F 自然度量。这些度量类似于成熟的黎曼流形切线束上的 g 自然度量,由正实数域上的六个实函数定义。我们深入分析了与狭缝切线束上的向量场和张量截面的特定提升相关的共形、同调和基林向量场,并配备了一般的伪黎曼 F 自然度量。值得注意的是,我们证明了大地向量场不可能是共形的,而对于某些 F 自然度量族,Liouville 向量场确实可以是狭缝切线束上的共形、同向或 Killing 向量场。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On natural symmetries on slit tangent bundles of Finsler manifolds

In this paper, we introduce a broad class of metrics on the slit tangent bundle of Finsler manifolds, referred to as F-natural metrics. These metrics are analogous to the well-established g-natural metrics on tangent bundles of Riemannian manifolds and are defined by six real functions on the domain of positive real numbers. We present an in-depth analysis of conformal, homothetic, and Killing vector fields associated with specific lifts of vector fields and tensor sections on the slit tangent bundle, equipped with a general pseudo-Riemannian F-natural metric. Notably, we prove that the geodesic vector field cannot be conformal and that, with respect to certain families of F-natural metrics, the Liouville vector field can indeed be conformal, homothetic, or Killing on the slit tangent bundle.

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来源期刊
Annali dell''Universita di Ferrara
Annali dell''Universita di Ferrara Mathematics-Mathematics (all)
CiteScore
1.70
自引率
0.00%
发文量
71
期刊介绍: Annali dell''Università di Ferrara is a general mathematical journal publishing high quality papers in all aspects of pure and applied mathematics. After a quick preliminary examination, potentially acceptable contributions will be judged by appropriate international referees. Original research papers are preferred, but well-written surveys on important subjects are also welcome.
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