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This paper establishes a set of theorems that describe the diameter of a zero-divisor graph for a finite direct productR₁ R₂ R₍ with respect to the diameters of the zero-divisor graphs of R₁, R₂, , R₍-₁ and R₍ (n>2). 2000 Mathematics Subject Classification. 05C75, 13A15
Atani et al. (Wed,) studied this question.