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Paper   IPM / M / 16314
School of Mathematics
  Title:   The zero-divisor graph of an amalgamated algebra
  Author(s): 
1.  Yusof Azimi
2.  Mohammad Reza Doustimehr
  Status:   To Appear
  Journal: Rend. Circ. Mat. Palermo
  Supported by:  IPM
  Abstract:
Let R and S be commutative rings with identity, f:RS a ring homomorphism and J an ideal of S. Then the subring R\bowtiefJ:={(r,f(r)+j) | rR and jJ} of R×S is called the amalgamation of R with S along J with respect to f. In this paper, we generalize and improve recent results on the computation of the diameter of the zero-divisor graph of amalgamated algebras and obtain new results. In particular, we provide new characterizations for completeness of the zero-divisor graph of amalgamated algebra, as well as, a complete description for the diameter of the zero-divisor graph of amalgamations in the special case of finite rings.

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