مشخصات پژوهش

Let (M2n; g) be a real hypersurface with recurrent shape operator and tangent to the structure vector eld  of the Sasakian space form fM(c). We show that if the shape operator A of M is recurrent then it is parallel. Moreover, we show that M is locally a product of two constant ϕ􀀀sectional curvature spaces.