"AAK theory" meaning in English

{
  "etymology_text": "From the last names of Vadym Adamyan, Damir Arov and Mark Krein, who developed the theory.",
  "head_templates": [
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        "head": "AAK theory"
      },
      "expansion": "AAK theory",
      "name": "en-prop"
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1997, Charles K. Chui, Guanrong Chen, Discrete H∞ Optimization, Springer Science+Business Media, page 169",
          "text": "We remark, however, that one of the main contributions of the AAK theory is that an explicit closed-form solution to the problem is formulated.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A study of infinite Hankel matrices and associated approximation problems."
      ],
      "id": "en-AAK_theory-en-name-rjIK7jDR",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "infinite",
          "infinite"
        ],
        [
          "approximation",
          "approximation"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A study of infinite Hankel matrices and associated approximation problems."
      ],
      "synonyms": [
        {
          "word": "AAK-theory"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Mark Krein",
        "Vadym Adamyan"
      ]
    }
  ],
  "word": "AAK theory"
}

{
  "etymology_text": "From the last names of Vadym Adamyan, Damir Arov and Mark Krein, who developed the theory.",
  "head_templates": [
    {
      "args": {
        "head": "AAK theory"
      },
      "expansion": "AAK theory",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "English uncountable nouns",
        "en:Mathematics"
      ],
      "examples": [
        {
          "ref": "1997, Charles K. Chui, Guanrong Chen, Discrete H∞ Optimization, Springer Science+Business Media, page 169",
          "text": "We remark, however, that one of the main contributions of the AAK theory is that an explicit closed-form solution to the problem is formulated.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A study of infinite Hankel matrices and associated approximation problems."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "infinite",
          "infinite"
        ],
        [
          "approximation",
          "approximation"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A study of infinite Hankel matrices and associated approximation problems."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Mark Krein",
        "Vadym Adamyan"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "AAK-theory"
    }
  ],
  "word": "AAK theory"
}