关系幂运算(举例续3) ●解(续):R4=R3oR=R1oR=R2 R5E ROR= R2OR=R3=R 般地,R2k+1=R1=R,k=0,112,, R2k=R2.k=12.# a a G(R) G(R4) G( R5 《集合论与图论》第7讲《集合论与图论》第7讲 7 关系幂运算(举例,续3) 解(续): R4 = R3○R = R1○R = R2, R5 = R4○R = R2○R = R3 = R1, 一般地, R2k+1=R1=R, k=0,1,2,…, R2k=R2, k=1,2,…,. # b a c b a c G( R ) G( R5 ) b a c G( R4 )