A study of another certain classes of contra and almost contra continuous mappings

The aim of present this manuscript is to apply the concept of δ–ß–open sets to introduce and study new classes of generalization contra continuity namely, contra –δ–ß–continuous, almost–δ–ß–continuous , almost weakly–δ–ß –continuous and almost contra–δ–ß–continuous mappings by utilizing δ–ß–open sets in topological spaces. Several interesting characterizations and various essential properties concerning of such these forms of generalized contra continuous mappings are obtained. Furthermore, the relationships between them and with some other existing forms of generalized contra continuous mappings are discussed.