篇名 | On Some Classes of Weakly Projective Symmetric Manifolds |
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卷期 | 29:4 |
作者 | Prajjwal Pal |
頁次 | 457-476 |
關鍵字 | Weakly symmetric manifolds 、 Weakly projective symmetric manifolds |
出刊日期 | 201311 |
The object of the present paper is to study some classes of weakly projective symmetric manifolds (WPS)n: At rst some properties of the 1-forms of (WPS)n(n > 2) have been studied. Next we consider conformally at (WPS)n(n > 2): Among others we obtain that, in a (WPS)n the integral curves of the vector 3 de ned by (1.3), are geodesics under certain condition. Next we consider (WPS)4 perfect uid spacetime. Finally, we give an example of a (WPS)n.