"Hankel matrix" meaning in English

{
  "etymology_text": "Named after Hermann Hankel.",
  "forms": [
    {
      "form": "Hankel matrices",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "Hankel matrixes",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "Hankel matrix (plural Hankel matrices or Hankel matrixes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Linear algebra",
          "orig": "en:Linear algebra",
          "parents": [
            "Algebra",
            "Mathematics",
            "Formal sciences",
            "Sciences",
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        }
      ],
      "glosses": [
        "A square matrix with constant skew-diagonals (positive sloping diagonals)."
      ],
      "id": "en-Hankel_matrix-en-noun-RaYQavKm",
      "links": [
        [
          "linear algebra",
          "linear algebra"
        ],
        [
          "square",
          "square"
        ]
      ],
      "raw_glosses": [
        "(linear algebra) A square matrix with constant skew-diagonals (positive sloping diagonals)."
      ],
      "topics": [
        "linear-algebra",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Hankel matrix",
        "Hermann Hankel"
      ]
    }
  ],
  "word": "Hankel matrix"
}

{
  "etymology_text": "Named after Hermann Hankel.",
  "forms": [
    {
      "form": "Hankel matrices",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "Hankel matrixes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "Hankel matrices",
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      "expansion": "Hankel matrix (plural Hankel matrices or Hankel matrixes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Linear algebra"
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      "glosses": [
        "A square matrix with constant skew-diagonals (positive sloping diagonals)."
      ],
      "links": [
        [
          "linear algebra",
          "linear algebra"
        ],
        [
          "square",
          "square"
        ]
      ],
      "raw_glosses": [
        "(linear algebra) A square matrix with constant skew-diagonals (positive sloping diagonals)."
      ],
      "topics": [
        "linear-algebra",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Hankel matrix",
        "Hermann Hankel"
      ]
    }
  ],
  "word": "Hankel matrix"
}