Almost pseudo f-manifolds

The aim of this thesis is to examine between relationship of pseudo f-structure, almost paracontact, almost product manifold, the torsion of tensor and almost pseudo f-manifolds also some curvature conditions. This thesis consists of four chapter. In the first chapter, abstract of literature that had done on contact manifold is given. In the second chapter, the basic concepts used in the thesis, the relevant definitions and theorems are given. In the third chapter, pseudo f-structure, the torsion of tensor, almost paracontact manifold and the manifold of almost product structures is mentioned and some basic theorems and propositions are proved. Finally in the last chapter, some curvature conditions of almost pseudo f-manifolds is given and ontained theorems are proved.