期刊名称：AKCE International Journal of Graphs and Combinatorics
印刷版ISSN：0972-8600
出版年度：2018
卷号：15
期号：1
页码：112-114
DOI：10.1016/j.akcej.2018.03.003
语种：English
出版社：Elsevier
摘要：AbstractLetRbe a commutative ring with unity. The co-maximal graphΓ(R)is the graph with vertex setRand two verticesaandbare adjacent ifRa+Rb=R. In this paper, we characterize rings for which the co-maximal graphΓ(R)is a line graph of some graphGand determine rings for whichΓ(R)is Eulerian or Hamiltonian. We also find the diameter and girth ofΓ(R).
