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Ricci Almost Solitons on Three-Dimensional Quasi-Sasakian Manifolds

机译:Ricci 在三维准萨萨基流形上几乎孤子

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摘要

In this paper it is shown that a three-dimensional non-cosymplectic quasi-Sasakian manifold admitting Ricci almost soliton is locally phi-symmetric. It is proved that a Ricci almost soliton on a three-dimensional quasi-Sasakian manifold reduces to a Ricci soliton.It is also proved that if a three-dimensional non-cosymplectic quasi-Sasakian manifold admits gradient Ricci soliton, then the potential function is invariant in the orthogonal distribution of the Reeb vector field xi. We also improve some previous results regarding gradient Ricci soliton on three-dimensional quasi-Sasakian manifolds. An illustrative example is given to support the obtained results.
机译:本文表明,承认Ricci近孤子的三维非共辛准Sasaki流形是局部phi对称的。证明,在三维准佐佐木流形上的Ricci几乎孤子简化为Ricci孤子。还证明了如果三维非共辛准萨萨基流形接受梯度Ricci孤子,则势函数在Reeb向量场习的正交分布中是不变的。我们还改进了以前关于三维准Sasaki流形上梯度Ricci孤子的一些结果。给出了一个说明性的例子来支持所获得的结果。

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