"グラフ理論" meaning in Japanese

{
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    {
      "args": {
        "1": "ja",
        "2": "グラフ",
        "3": "理論",
        "t1": "graph",
        "t2": "theory",
        "tr1": "gurafu",
        "tr2": "riron"
      },
      "expansion": "グラフ (gurafu, “graph”) + 理論 (riron, “theory”)",
      "name": "af"
    },
    {
      "args": {
        "1": "ja",
        "2": "en",
        "3": "graph theory",
        "nocap": "y"
      },
      "expansion": "calque of English graph theory",
      "name": "cal"
    }
  ],
  "etymology_text": "グラフ (gurafu, “graph”) + 理論 (riron, “theory”), calque of English graph theory",
  "forms": [
    {
      "form": "グラフ理論",
      "ruby": [
        [
          "理",
          "り"
        ],
        [
          "論",
          "ろん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
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      "form": "gurafu riron",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "グラフ りろん"
      },
      "expansion": "グラフ理(り)論(ろん) • (gurafu riron)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "Japanese entries with incorrect language header",
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        },
        {
          "kind": "other",
          "name": "Japanese terms suffixed with 論",
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          "name": "Japanese terms with redundant sortkeys",
          "parents": [
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        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Graph theory",
          "orig": "ja:Graph theory",
          "parents": [
            "Mathematics",
            "Visualization",
            "Formal sciences",
            "Computing",
            "Interdisciplinary fields",
            "Sciences",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "graph theory"
      ],
      "id": "en-グラフ理論-ja-noun-FApdg1Ov",
      "links": [
        [
          "graph theory",
          "graph theory"
        ]
      ],
      "wikipedia": [
        "ja:グラフ理論"
      ]
    }
  ],
  "sounds": [
    {
      "other": "グラフりろん"
    },
    {
      "ipa": "[ɡɯ̟ᵝɾa̠ɸɯ̟ᵝ ɾʲiɾõ̞ɴ]"
    }
  ],
  "word": "グラフ理論"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "グラフ",
        "3": "理論",
        "t1": "graph",
        "t2": "theory",
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        "tr2": "riron"
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      "expansion": "グラフ (gurafu, “graph”) + 理論 (riron, “theory”)",
      "name": "af"
    },
    {
      "args": {
        "1": "ja",
        "2": "en",
        "3": "graph theory",
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      "name": "cal"
    }
  ],
  "etymology_text": "グラフ (gurafu, “graph”) + 理論 (riron, “theory”), calque of English graph theory",
  "forms": [
    {
      "form": "グラフ理論",
      "ruby": [
        [
          "理",
          "り"
        ],
        [
          "論",
          "ろん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "gurafu riron",
      "tags": [
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      ]
    }
  ],
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      "args": {
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    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
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        "Japanese terms spelled with sixth grade kanji",
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      "other": "グラフりろん"
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    {
      "ipa": "[ɡɯ̟ᵝɾa̠ɸɯ̟ᵝ ɾʲiɾõ̞ɴ]"
    }
  ],
  "word": "グラフ理論"
}