Recently Tang et al put forward two new operations G,■k G2 and G,◆k G2 of graphs G,and G2,and obtained the distance sp......

一个具有围长对(g,h)的k—正则图称为(k;g,h)一图,这种图的最小可能顶点数记作f(k;g,h). 本文证明了:f(3;5,8)=18,f(3;6,7)=18,f(3......