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  "body": "\n## Summary\n\nIn graph theory, an **acyclic coloring** is a (proper) [[vertex coloring|0NCPXH194Y]] in which every 2-chromatic subgraph is acyclic. The **acyclic chromatic number** $A(G)$ of a [[graph|00C0BR7D7H]] $G$ is the fewest colors needed in any acyclic coloring of $G$.\n",
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