{
  "annotation_id": "c4cae5f7-e2d6-4a1d-b390-8689d36bf3a8",
  "date_created": "2026-03-02T18:01:03.796000Z",
  "date_modified": "2026-03-02T18:01:03.796000Z",
  "file_hash": "7af1e67520a4e05a616e28b49c8b6a34e7add6b78f892e46273e3b195dbcce3a",
  "private": false,
  "record": {
    "abstract": "This work studies the Zipf Law for cities in Brazil. Data from censuses of\n1970, 1980, 1991 and 2000 were used to select a sample containing only cities\nwith 30,000 inhabitants or more. The results show that the population\ndistribution in Brazilian cities does follow a power law similar to the ones\nfound in other countries. Estimates of the power law exponent were found to be\n2.22 +/- 0.34 for the 1970 and 1980 censuses, and 2.26 +/- 0.11 for censuses of\n1991 and 2000. More accurate results were obtained with the maximum likelihood\nestimator, showing an exponent equal to 2.41 for 1970 and 2.36 for the other\nthree years.",
    "arxiv_id": "physics/0511216",
    "authors": [
      "Newton J. Moura Jr.",
      "Marcelo B. Ribeiro"
    ],
    "categories": [
      "physics.soc-ph",
      "cond-mat.stat-mech",
      "nlin.AO",
      "nlin.PS"
    ],
    "doi": "10.1016/j.physa.2005.11.038",
    "journal_ref": "Physica A 367 (2006) 441-448",
    "title": "Zipf Law for Brazilian Cities",
    "url": "https://arxiv.org/abs/physics/0511216"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c780cee6-012a-4eb9-9876-edb2eedaf284",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}