On semi̇commutati̇ve ri̇ngs

This thesis consists of five chapters. The first chapter is devoted to the introduction. The second chapter introduces with the preliminaries, definitions and necessary theorems that will be required for later use. In the third chapter, semicommutative rings are introduced and, are examined characterizations and properties of semicommutaive rings and the relationships between other rings are investigated. In the fourth chapter some extended semicommutative ring classes are introduced and properties of extended rings are investigated. Finally, the semicommutative property of skew polynomial ring is investigated and give examples rings whose skew polynomial ring is semicommutative.