期刊
JOURNAL OF GEOMETRY
卷 105, 期 1, 页码 139-165出版社
SPRINGER BASEL AG
DOI: 10.1007/s00022-013-0200-4
关键词
Generalized curvature tensor; locally symmetric manifold; recurrent manifold; semisymmetric manifold; pseudosymmetric manifold
类别
资金
- CSIR, New Delhi [09/025 (0194)/2010-EMR-I]
In the literature we see that after introducing a geometric structure by imposing some restrictions on Riemann-Christoffel curvature tensor, the same type structures given by imposing same restriction on other curvature tensors being studied. The main object of the present paper is to study the equivalency of various geometric structures obtained by same restriction imposing on different curvature tensors. In this purpose we present a tensor by combining Riemann-Christoffel curvature tensor, Ricci tensor, the metric tensor and scalar curvature which describe various curvature tensors as its particular cases. Then with the help of this generalized tensor and using algebraic classification we prove the equivalency of different geometric structures (see Theorems 6.3, 6.4, 6.5, 6.6 and 6.7; Tables 1 and 2).
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