Volume 16 , Issue 4 , November 2014 , Pages 139 -147
1 Department of Mathematics, School of Science Education, University of Sulaimani
This work is divided into two parts; first we find all matrices which commutative with any given
matrix, and second devoted to some multiplication commutative properties of M2x2(F), where F is a
field. Moreover some cases which the ring M2x2(F) become commutative are studied.