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  "body": "\n## Summary\n\nA graph is $k$-colourable when it has a proper colouring with $k$ colours. The least such $k$ is the chromatic number. The node [[k-colourable graph|0Y7VDAX8Q3]] gives the precise definition.\n",
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  "msc": [
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  "name": "K-colourable graph",
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  "source": "https://github.com/tamnd/math2/blob/main/nodes/0XH/0XHZW0VCPR.md",
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  "tag": "0XHZW0VCPR",
  "uri": "m2://0XHZW0VCPR",
  "url": "https://math2.tamnd.com/wiki/k-colourable-graph/",
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    "tag": "0XHZW0VCPR",
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