Η-parallel tensor fields on almost α-cosymplectic manifolds

This thesis consists of five chapters. The first chapter is devoted to the introduction section and provide a generel knowledge of literature. In the second chapter, the necessary basic concepts and definitions are introduced. In the third chapter, the structure of almost α-cosymplectic manifold is considered and some certain parallel tensor fields are examined for this structure with the help of basic curvature properties. In the fourth chapter, some general results related to almost α-cosymplectic manifold satisfying some tensor fields are given. In the fifth chapter, almost α-cosymplectic manifold satisfying some certain flatness conditions is addressed in detail and some results are obtained.