Warped-Twisted Product Semi-Slant Submanifolds

We introduce the notion of warped-twisted product semi-slant submanifolds of the form M-f2(T) x(f1) M-theta with warping function f(2) on M-theta and twisting function f(1), where M-T is a holomorphic and M-theta is a slant submanifold of a globally conformal Kaehler manifold. We prove that a warped-twisted product semi-slant submanifold of a globally conformal Kaehler manifold is a locally doubly warped product. Then we establish a general inequality for doubly warped product semi-slant submanifolds and get some results for such submanifolds by using the equality sign of the general inequality.