"Weierstrass function" meaning in English

{
  "etymology_text": "Discovered by Karl Weierstrass.",
  "forms": [
    {
      "form": "Weierstrass functions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Weierstrass function (plural Weierstrass functions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "name": "Fractals",
          "orig": "en:Fractals",
          "parents": [],
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Functions",
          "orig": "en:Functions",
          "parents": [
            "Algebra",
            "Calculus",
            "Geometry",
            "Mathematical analysis",
            "Mathematics",
            "Formal sciences",
            "Sciences",
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            "Fundamental"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
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            "Sciences",
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            "Fundamental"
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        }
      ],
      "glosses": [
        "A real-valued function that is continuous everywhere but differentiable nowhere."
      ],
      "id": "en-Weierstrass_function-en-noun-4eqcAoXM",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "real-valued",
          "real-valued"
        ],
        [
          "function",
          "function"
        ],
        [
          "continuous",
          "continuous"
        ],
        [
          "everywhere",
          "everywhere"
        ],
        [
          "differentiable",
          "differentiable"
        ],
        [
          "nowhere",
          "nowhere"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A real-valued function that is continuous everywhere but differentiable nowhere."
      ],
      "related": [
        {
          "word": "fractal"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Karl Weierstrass"
      ]
    }
  ],
  "word": "Weierstrass function"
}

{
  "etymology_text": "Discovered by Karl Weierstrass.",
  "forms": [
    {
      "form": "Weierstrass functions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "Weierstrass function (plural Weierstrass functions)",
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    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "fractal"
    }
  ],
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        "en:Fractals",
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        "en:Mathematics"
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      "glosses": [
        "A real-valued function that is continuous everywhere but differentiable nowhere."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "real-valued",
          "real-valued"
        ],
        [
          "function",
          "function"
        ],
        [
          "continuous",
          "continuous"
        ],
        [
          "everywhere",
          "everywhere"
        ],
        [
          "differentiable",
          "differentiable"
        ],
        [
          "nowhere",
          "nowhere"
        ]
      ],
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        "(mathematics) A real-valued function that is continuous everywhere but differentiable nowhere."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Karl Weierstrass"
      ]
    }
  ],
  "word": "Weierstrass function"
}