CONGRUENCE RELATION AND QUOTIENT GROUP
Zhang Zhou-ping · Journal of Shaanxi University of Science & Technology · 2004
This paper prove that union and intersection of the congruence relation is congruence relation. Suppose 〈A,*〉 is group, R is a congruence relation on a set A, a define of quotient group are given also here. We discuss some properties on quotient group and normal subgrop determined by the quotient group.