Almost paracomplex structures associated with the diagonal lifts and operators on cotangent bundle T*(M n)

The aim of this thesis is to examine Operators (Tachibana and Vishnevskii) applied vertically,complete and horizontally lifts according to an almost paracomplex structure in cotangent bundle and to obtain some relations in this context.In this study firstly, the Tachibana operators were applied to 1-form, vertical, complete and horizontal lifts with respect to almost paracomplex structure on cotangent bundle. Secondly, the Vishnevskii operators were applied to 1-form according to the diagonal lift on cotangent bundle. Finally, covariant derivates of almost paracomplex structure with respect to vertical ,complete and horizontal lifts were obtained.