Warped Product Semi‐Invariant Submanifolds of Nearly Cosymplectic Manifolds

Abstract

We study warped product semi‐invariant submanifolds of nearly cosymplectic manifolds. We prove that the warped product of the type M ⊥ × f M T is a usual Riemannian product of M ⊥ and M T , where M ⊥ and M T are anti‐invariant and invariant submanifolds of a nearly cosymplectic manifold , respectively. Thus we consider the warped product of the type M T × f M ⊥ and obtain a characterization for such type of warped product.