On the comaximal ideal graph of a commutative ring

被引:8
作者
Azadi, Mehrdad [1 ]
Jafari, Zeinab [1 ]
Eslahchi, Changiz [2 ]
机构
[1] Islamic Azad Univ, Cent Tehran Branch, Dept Math, Tehran, Iran
[2] Shahid Beheshti Univ, Dept Comp Sci, Tehran, Iran
关键词
Chromatic number; clique number; planar graph; perfect graph;
D O I
10.3906/mat-1505-23
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let R be a commutative ring with identity. We use Gamma(R) to denote the comaximal ideal graph. The vertices of Gamma(R) are proper ideals of R that are not contained in the Jacobson radical of R, and two vertices I and J are adjacent if and only if I + J = R. In this paper we show some properties of this graph together with the planarity and perfection of Gamma(R).
引用
收藏
页码:905 / 913
页数:9
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