On a graph of ideals of a commutative ring

Year 2019, Volume: 68 Issue: 2, 2283 - 2297, 01.08.2019

Mehdi Khoramdel , Shahabaddin Ebrahimi Atani , Saboura Dolati Pishhesari

https://doi.org/10.31801/cfsuasmas.534944

Cited By: 1

Abstract

In this paper, we introduce and investigate a new graph of a commutative ring R, denoted by G(R), with all nontrivial ideals of R as vertices, and two distinct vertices I and J are adjacent if and only if ann(I∩J)=ann(I)+ann(J). In this article, the basic properties and possible structures of the graph G(R) are studied and investigated as diameter, girth, clique number, cut vertex and domination number. We characterize all rings R for which G(R) is planar, complete and complete r-partite. We show that, if (R,M) is a local Artinian ring, then G(R) is complete if and only if Soc(R) is simple. Also, it is shown that if R is a ring with G(R) is r-regular, then either G(R) is complete or null graph. Moreover, we show that if R is an Artinian ring, then R is a serial ring if and only if G(R/I) is complete for each ideal I of R.

Keywords

Ideals, clique number, complete r-partite, planar property

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