"IP set" meaning in English

{
  "etymology_text": "Disputed. Perhaps an abbreviation of infinite-dimensional parallelepiped, or of idempotent.",
  "forms": [
    {
      "form": "IP sets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "IP set (plural IP sets)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A set of natural numbers that contains all finite sums of some infinite set."
      ],
      "id": "en-IP_set-en-noun-DOrY8PZ9",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "natural number",
          "natural number"
        ],
        [
          "finite",
          "finite"
        ],
        [
          "sum",
          "sum"
        ],
        [
          "infinite",
          "infinite"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A set of natural numbers that contains all finite sums of some infinite set."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "IP set"
}

{
  "etymology_text": "Disputed. Perhaps an abbreviation of infinite-dimensional parallelepiped, or of idempotent.",
  "forms": [
    {
      "form": "IP sets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "IP set (plural IP sets)",
      "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 set of natural numbers that contains all finite sums of some infinite set."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "natural number",
          "natural number"
        ],
        [
          "finite",
          "finite"
        ],
        [
          "sum",
          "sum"
        ],
        [
          "infinite",
          "infinite"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A set of natural numbers that contains all finite sums of some infinite set."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "IP set"
}