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   the sum-annihilating essential ideal graph of a commutative ring  
   
نویسنده alilou abbas ,amjadi jafar
منبع communications in combinatorics and optimization - 2016 - دوره : 1 - شماره : 2 - صفحه:117 -135
چکیده    Let r be a commutative ring with identity. an ideal i of a ring r is called an annihilating ideal if there exists r∈r∖{0} such that ir=(0) and an ideal i of r is called an essential ideal if i has non-zero intersection with every other non-zero ideal of r. the sum-annihilating essential ideal graph of r, denoted by aer, is a graph whose vertex set is the set of all non-zero annihilating ideals and two vertices i and j are adjacent whenever ann(i)+ann(j) is an essential ideal. in this paper we initiate the study of the sum-annihilating essential ideal graph. we first characterize all rings whose sum-annihilating essential ideal graph are stars or complete graphs and then establish sharp bounds on domination number of this graph. furthermore determine all isomorphism classes of artinian rings whose sum-annihilating essential ideal graph has genus zero or one.
کلیدواژه commutative rings ,annihilating ideal ,essential ideal ,genus of a graph
آدرس azarbaijan shahid madani university, department of mathematics, iran, azarbaijan shahid madani university, department of mathematics, iran
پست الکترونیکی j-amjadi@azaruniv.ac.ir
 
     
   
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