MBK-T½-SPACES

Firstly, we give some characterizations of the concepts both mbk-closed sets and mbk-g-closed sets. Then, we obtain that mbk-T½-space is stronger than mbk-T0-space and weaker than mbk-T1-space. To give a decomposition of mbk-T1-space, we define the concept of mbk-symmetric as a new space and give a characterization of this space. Finally, we also obtain that each of the mbk-Ti-space such that i={0,1/2,1} concepts coincides with the other in mbk-symmetric spaces.