PCA BLOCKED REES MATRIX SEMIGROUPS
LI Yong-hua · Journal of South China Normal University · 2011
PCA blocked Rees matrix semigroups are constructed by ·-monoids and bisystems of ·-monoids,the class of PCA blocked Rees matrix semigroups is a generalization of the class of PA blocked Rees matrix semigroups.An example is given to illustrate the existence of a semigroup which is a PCA blocked Rees matrix semigroup but not a PA blocked Rees matrix semigroup.