CENTER OF THE SKEW POLYNOMIAL RING OVER TRINION MATRIX

be an endomorphism on R. Then the set ofLet R be a ring and  a a t a t ai Rt f polynomials n   1  0 n forms a ring with  R. This multiplication rulet for all a a multiplication rule ta is noncommutative. Therefore, the set of polynomials described is called skew polynomial ring. In this paper, we consider R to be the 2 by 2 trinion matrix and determine its center.