{
  "aliases": null,
  "backlinks": null,
  "body": "\n## Statement\n\nThe number $\\sqrt[3]{2}$ is not a [[constructible number|0FMN2MN7TM]].\nSo the cube cannot be [[doubled|04SD3F4FCR]] with straightedge and compass.\n\n## Remarks\n\nThe proof: $x^3 - 2$ is irreducible over $\\mathbb{Q}$, by [[Eisenstein's criterion|02BPKD7TMD]] with $p = 2$. So $[\\mathbb{Q}(\\sqrt[3]{2}) : \\mathbb{Q}] = 3$.\nSince $3$ is not a power of $2$, the number $\\sqrt[3]{2}$ is not constructible, by the [[degree theorem|0SSSM1D475]].\n\n## History\n\nPierre Wantzel proved the impossibility in 1837.\n\n## Explanations\n\n### L1 human\n\nThe edge of the doubled cube is the cube root of $2$.\nIts minimal polynomial has degree $3$, but constructible numbers have degree a power of $2$.\n",
  "commit": "545acf83a9b75c8ddc375ef8b23d2ae101a4d7e4",
  "front": {
    "kind": "statement",
    "msc": [
      "12F05"
    ],
    "name": "Impossibility of doubling the cube",
    "role": "theorem",
    "sources": [
      {
        "locator": "Proof of impossibility",
        "url": "https://en.wikipedia.org/wiki/Doubling_the_cube"
      }
    ],
    "tag": "0CQ357M0QS",
    "uses": [
      "04SD3F4FCR",
      "0SSSM1D475",
      "02BPKD7TMD",
      "0N5QW9K7MH"
    ]
  },
  "kind": "statement",
  "link": "https://math2.tamnd.com/node/0CQ357M0QS/",
  "links": [
    {
      "field": "uses",
      "target": "04SD3F4FCR"
    },
    {
      "field": "uses",
      "target": "0SSSM1D475"
    },
    {
      "field": "uses",
      "target": "02BPKD7TMD"
    },
    {
      "field": "uses",
      "target": "0N5QW9K7MH"
    }
  ],
  "markdown": "https://math2.tamnd.com/node/0CQ357M0QS.md",
  "msc": [
    "12F05"
  ],
  "name": "Impossibility of doubling the cube",
  "prov": null,
  "role": "theorem",
  "source": "https://github.com/tamnd/math2/blob/main/nodes/0CQ/0CQ357M0QS.md",
  "status": null,
  "tag": "0CQ357M0QS",
  "uri": "m2://0CQ357M0QS",
  "url": "https://math2.tamnd.com/wiki/impossibility-of-doubling-the-cube/",
  "writing": {
    "tag": "0CQ357M0QS",
    "kind": "statement",
    "level": "W0",
    "next": [
      {
        "what": "an inventory row",
        "note": "the row of the inventory that the node accounts for",
        "have": 0,
        "want": 1
      }
    ]
  }
}
