设G是一个群,用Fz(G)表示G的中心图.定义厂Z(G)的顶点集为群G的元素满足:对G中任意两个不同的元素n,b,若ab∈Z(G),则a,b相连,其中Z(G)为G的中心.主要研究二面体群D2。和广义四元数群Q4a的中心图,完整地得到了这两类群的中心图.
Let G be a group. The center graph of G,denoted by *Pz (G) ,is defined as the graph with vertex set of G and two distinct vertices a and b are joined by an edge whenever abe Z(G). In this paper,we mainly study the center graphs of the dihedral group D2,, and the generalized quaternion group Qia, and obtain the center graphs of the two classes of groups.