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The concept of identifying codes was introduced by Karpovsky, Chakrabarty and Levitin. These codes find their application, for example, in sensor networks. The network is modelled by a graph. In this paper, the goal is to find good identifying codes in a natural setting, that is, in a graph Er=(V,E) where V=Z2 is the set of vertices and each vertex (sensor) can check its neighbours within Euclidean...
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