In a k-coloring of a uniquely k-colorable graph, the subgraph induced by the union of any two color classes is connected.
貌似
说，从一个
中选取标有同类颜色
节点，
些节点构成子
接。
？
In a k-coloring of a uniquely k-colorable graph, the subgraph induced by the union of any two color classes is connected.
貌似说，从一个中选取标有同类颜色节点，些节点构成子接。？
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