Center of intersection graph of submodules of a module

Let R be a commutative ring and M be a unital R-module. The intersection graph of submodules of M, denoted by GM, is the graph whose vertex set is the collection of all submodules of M and in which two distinct vertices A and B are adjacent if and only if A∩B≠0. In this paper the notion of essentiality of modules plays a vital role in the study of intersection graph of submodules of M. This notion gives a new dimension in characterizing the center of intersection graphs of submodules of M. We define mna (maximal non-adjacent) vertex in GMand observe some of its characteristics. The notion of complemented intersection graph exhibits some significant algebraic and graphical properties. Moreover, defining the concept of isolated center in GMwe establish certain results related to mna vertex. Keywords: Module, Essential submodule, Intersection graph, Complemented graph, Center

Abstract licence: CC BY-NC-ND

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