Analogs of Gray Identities for the Riemannian Curvature Tensor of Generalized Kenmotsu Manifolds

In this paper we consider the contact analogs of Gray identities for generalized Kenmotsu manifolds, based on these three classes of generalized Kenmotsu manifolds and we get the local structure of the classes of manifolds. It is proved that generalized almost C(?)-Kenmotsu manifold is a Kenmotsu manifold of constant curvature ?1 and obtain its local characterization.