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  "body": "\n## Summary\n\nIn the mathematical field of graph theory, the **pancake graph** *P*\u003csub\u003e*n*\u003c/sub\u003e or ***n*-pancake graph** is a graph whose vertices are the permutations of *n* symbols from 1 to *n* and its edges are given between permutations transitive by prefix reversals.\n",
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