S_4∨C_n的交叉数

The Crossing Numbers of S_4∨C_n

将星图S_4的每个顶点与C_n每个点相连,得到的图记为S_4 V C_n.本文证明了S_4 V C_n的交叉数为Z(5,n)+2[n/2]+2.

connecting the vertices of S_4 to the vertices of C_n,the join graph of S_4 V C_n was obtained.In this paper,the crossing numbers of S_4 V C_n to be Z（5,n） ＋2[n/2]＋2 was proved.