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ON QUASI-EINSTEINIAN MANIFOLDS
【摘要】 <正> If the Ricci tensor of a Riemannian manifold (M, α) satisfies where A and B are certain functions, ξ is a unit vector field, then we call M a quasi-Einsteinian manifold, and denote it by QE(ξ) (T. Adati et al. called it a ξ-Einstein), ξ is
- 【文献出处】 Science Bulletin ,科学通报(英文版) , 编辑部邮箱 ,1986年23期
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