Affiliation:
1. Department of Mathematics, University of Delhi, Delhi 110007, India
Abstract
Let [Formula: see text] be a commutative ring with nonzero identity. Let [Formula: see text] denote the maximal graph associated to [Formula: see text], that is, [Formula: see text] is a graph with vertices as non-units of [Formula: see text], where two distinct vertices [Formula: see text] and [Formula: see text] are adjacent if and only if there is a maximal ideal of [Formula: see text] containing both. In this paper, we characterize the finite commutative rings such that their maximal graph are planar graphs, and we also study the case where they are outerplanar and ring graphs. The equivalence of outerplanar graphs and ring graphs for [Formula: see text] is established.
Publisher
World Scientific Pub Co Pte Lt
Subject
Discrete Mathematics and Combinatorics