PRINCIPAL TORUS BUNDLES OF LORENTZIAN g-MANIFOLDS AND THE φ-NULL OSSERMAN CONDITION

被引：1
|
作者：
Brunetti, Letizia [1 ]
Caldarella, Angelo V. [1 ]
机构：
[1] Univ Bari Aldo Moro, Dept Math, I-70125 Bari, Italy
来源：
KODAI MATHEMATICAL JOURNAL | 2013年 / 36卷 / 02期
关键词：
Lorentz manifold; Semi-Riemannian manifold; Semi-Riemannian submersion; Jacobi operator; Osserman condition; Indefinite g-manifold; Lorentz Sasakian manifold; Kahler manifold; CURVATURE CHARACTERIZATION; F-STRUCTURES; CONJECTURE;
D O I：
10.2996/kmj/1372337513
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
In this short note we provide a few results about the projectability of the phi-null Osserman condition onto the classical and the null-Osserman condition, via semi-Riemannian submersions as projection maps of principal torus bundles induced by a Lorentzian g-manifold.
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页码：197 / 208
页数：12
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