### The Zero Divisor Graph of the Ring Z_(2^2 p)

#### Abstract

In this paper, we consider the crossing number and the chromatic number of the zero divisor graph Γ(Z_(2^2 p)) to show that this type of zero divisor graphs is bipartite graph, and the smallest cycle in Γ(Z_(2^2 p)) is of length four this implies that the girth is equal four.

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DOI: http://dx.doi.org/10.14500/aro.10058

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