篇名 | Some Theorems on 3-dimensional Quasi-Sasakian Manifolds |
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卷期 | 27:4 |
作者 | Abul Kalam Mondal 、 Avik De |
頁次 | 411-427 |
關鍵字 | Quasi-Sasakians manifold 、 Structure function 、 φ−symmetric 、 η−parallel Ricci tensor 、 Cyclic parallel Ricci tensor |
出刊日期 | 201111 |
The object of the present paper is to study φ−Ricci symmetric and locally φ−Ricci symmetric 3-dimensional quasi-Sasakian manifolds with structure function β =constant. Also we study η−parallel Ricci tensor and cyclic parallel Ricci tensor with β =constant. Applications of such manifold have been considered. The existence of 3-dimensional φ−Ricci symmetric and locally φ−Ricci symmetric quasi-Sasakian manifolds are also given by concrete examples.