记任意环R的中心图为Γ(R),其顶点集为R/Z(R),Γ(R)中两个不同的顶点a、b相连当且仅当a,b(∈)Z(R)且ab∈Z(R)或ba∈Z(R),Z(R)是R的中心.本文主要研究了群环ZnS3的中心图Γ(ZnS3)的直径和连通性.
The center graph of an arbitrary ring R denoted by Γ(R) is a graph with vertex set R/Z(R), and two distinct vertices a and b are adjacent if and only if a,b∈ Z(R) and ab ∈ Z(R) or ba∈Z(R), where Z(R) is the center of R. In this paper,the connectivity and the diameter of Γ(ZnS3) are characterized.