Extended Idempotent Divisor Graph of Commutative Rings
extended zero divisor graph
idempotent divisor graph
degree of vertices
size of a graph
reduced ring
Associate graph Л(R) is said to be idempotent divisor graph with vertices set V(Л(R))=R^*, if any two non- zero elements a_1 and a_2 are adjacent if and only if a_1.a_2=e, where e is an idempotent element not equal 1. In this work we study and introduce the extended idempotent divisor graph that is for any two non-zero elements a_1 and a_2 adjacent if 〖〖 a〗_1〗^(t_1 ). 〖a_2〗^(t_2 )=e , where t_1,t_2 ∈Z and e an idempotent element not equal one, and we give some results for properties such as diameter and the girth of this graph. Also, we investigated rings isomorphic to direct product two finite local rings.