Hyang Sook Kim, Don Kwon Choi, and Jin Suk Pak Inje University, Kyungpook National University, Kyungpook National University
Abstract : In this paper we investigate $(n+1)(n\geq 3)$-dimensional contact $CR$-submanifolds $M$ of $(n-1)$ contact $CR$-dimension in a complete simply connected Sasakian space form of constant $\phi$-holomorphic sectional curvature $c\not= -3$ which satisfy the condition $ h(FX,Y)+h(X,FY)$ $=0$ for any vector fields $X, Y$ tangent to $M$, where $h$ and $F$ denote the second fundamental form and a skew-symmetric endomorphism (defined by (2.3)) acting on tangent space of $M$, respectively.
Keywords : contact $CR$-submanifold, Sasakian space form, almost contact structure, Sasakian structure, second fundamental form
