关系幂运算(举例续2) 静解(续):R0=IA R=ROR=R=a, b>, <b, a>, <a, c>1. R2=RTOR=<a, a> <b,b>, <b, c>I R3=R2R={ab>,a,b>,<a,c>}=R1 a 心0C a G(R) G(R3) 《集合论与图论》第7讲《集合论与图论》第7讲 6 关系幂运算(举例,续2) 解(续): R0 = IA, R1 = R0○R = R = {<a,b>,<b,a>,<a,c>}, R2 = R1○R = {<a,a>,<b,b>,<b,c>}, R3 = R2○R = {<a,b>,<a,b>,<a,c>} = R1, b a c b a c G( R ) G( R3 )