NULL AND INFINITESIMAL ISOTROPY IN SEMI-RIEMANNIAN GEOMETRY

被引:10
|
作者
GARCIARIO, E [1 ]
KUPELI, DN [1 ]
机构
[1] MIDDLE E TECH UNIV,DEPT MATH,ANKARA 06531,TURKEY
关键词
SEMI-RIEMANNIAN GEOMETRY; ISOTROPY;
D O I
10.1016/0393-0440(94)90031-0
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Null and infinitesimal isotropy are defined for semi-Riemannian manifolds in a more general context. A theorem of Karcher is extended to semi-Riemannian manifolds in a more general setting. Also, by using this theorem, a characterization of static blackhole metrics can be made as well as a characterization of Robertson-Walker metrics as Karcher made.
引用
收藏
页码:207 / 222
页数:16
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