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In the mathematical field of graph theory, the Wong graph is a 5-regular undirected graph with 30 vertices and 75 edges. It is one of the four -cage graphs, the others being the Foster cage, the Meringer graph, and the Robertson–Wegner graph.
Like the unrelated Harries–Wong graph, it is named after Pak-Ken Wong.
It has chromatic number 4, diameter 3, and is 5-vertex-connected.
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