On null isotropy in spacetimes期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

On null isotropy in spacetimes

Authors:	Fazilet?Erkekoglu author-information" > author-information__contact u-icon-before" > mailto:fazilet@hacettepe.edu.tr" title=" fazilet@hacettepe.edu.tr" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author

Affiliation:	(1) Department of Mathematics, Hacettepe University, 06532-Beytepe, Ankara, Turkey

Abstract:	Null isotropy in a spacetime is defined. The relation of null isotropy to the constant curvature and infinitesimal spatial isotropy is investigated. The influence of null isotropy on conjugate points along null geodesics and curvature singularities is investigated.

Keywords:	Spacetime Instantaneous observer Stress-energy tensor Perfect fluid Einstein equation Jacobi operator Weyl operator Null isotropic Infinitesimally spatially isotropic
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