"conference matrix" meaning in English

{
  "etymology_text": "Named by Vitold Belevitch, from their relevance to a problem in telephony.",
  "forms": [
    {
      "form": "conference matrices",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "conference matrices"
      },
      "expansion": "conference matrix (plural conference matrices)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A square matrix C with 0 on the diagonal and +1 and −1 off the diagonal, such that CᵀC is a multiple of the identity matrix I."
      ],
      "id": "en-conference_matrix-en-noun-6YiAip0-",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "square matrix",
          "square matrix"
        ],
        [
          "diagonal",
          "diagonal"
        ],
        [
          "multiple",
          "multiple"
        ],
        [
          "identity",
          "identity"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A square matrix C with 0 on the diagonal and +1 and −1 off the diagonal, such that CᵀC is a multiple of the identity matrix I."
      ],
      "synonyms": [
        {
          "word": "C-matrix"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Vitold Belevitch",
        "conference matrix"
      ]
    }
  ],
  "word": "conference matrix"
}

{
  "etymology_text": "Named by Vitold Belevitch, from their relevance to a problem in telephony.",
  "forms": [
    {
      "form": "conference matrices",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "conference matrices"
      },
      "expansion": "conference matrix (plural conference matrices)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Mathematics"
      ],
      "glosses": [
        "A square matrix C with 0 on the diagonal and +1 and −1 off the diagonal, such that CᵀC is a multiple of the identity matrix I."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "square matrix",
          "square matrix"
        ],
        [
          "diagonal",
          "diagonal"
        ],
        [
          "multiple",
          "multiple"
        ],
        [
          "identity",
          "identity"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A square matrix C with 0 on the diagonal and +1 and −1 off the diagonal, such that CᵀC is a multiple of the identity matrix I."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Vitold Belevitch",
        "conference matrix"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "C-matrix"
    }
  ],
  "word": "conference matrix"
}