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Fan_physics

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let (P,¡Ü) be a poset(partially ordered set) with least element 0.The 0-divisor graph of poset P,denoted by G(P),is defined [1,2] as follows : V(G(P))=P, x,y¡ÊV(G(P)) are adjacent if and only if {x,y}^l ={0} where S^l={x|for any element s¡ÊS,x¡Üs}for any subset S of P.
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Fan_physics

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2Â¥: Originally posted by chunjvke at 2013-04-06 16:35:51
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