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On Semi-symmetric Para Kenmotsu Manifolds

机译:Onsemi sy tri c Paraken Tsumomani模具

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In this paper we study some remarkable properties of para Kenmotsu (briefly p-Kenmotsu) manifolds satisfying the conditions R(X,Y).R=0, R(X,Y).P=0 and P(X,Y).R=0, where R(X, Y) is the Riemannian curvature tensor and P(X, Y) is the Weyl projective curvature tensor of the manifold. It is shown that a semi-symmetric p-Kenmotsu manifold (Mn, g) is of constant curvature and hence is an sp-Kenmotsu manifold. Also, we obtain the necessary and sufficient condition for a p-Kenmotsu manifold to be Weyl projective semi-symmetric and shown that the Weyl projective semi-symmetric p-Kenmotsu manifold is projectively flat. Finally we prove that if the condition P(X,Y).R=0 is satisfied on a p-Kenmotsu manifold then its scalar curvature is constant.
机译:在本文中,我们研究了满足条件R(X,Y).R = 0,R(X,Y).P = 0和P(X,Y)的对等Kenmotsu流形(简称p-Kenmotsu)的一些显着性质。 R = 0,其中R(X,Y)是黎曼曲率张量,P(X,Y)是流形的Weyl投影曲率张量。结果表明,一个半对称的p-Kenmotsu流形(Mn,g)具有恒定的曲率,因此它是一个sp-Kenmotsu流形。同样,我们获得了p-Kenmotsu流形为Weyl射影半对称的充要条件,并证明了Weyl射影半对称p-Kenmotsu流形为射影平坦。最后,我们证明如果在p-Kenmotsu流形上满足条件P(X,Y).R = 0,则其标量曲率是恒定的。

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