{
  "annotation_id": "72d480f6-69b9-4b3c-9975-9174acbb8cab",
  "date_created": "2026-03-02T18:00:35.385000Z",
  "date_modified": "2026-03-02T18:00:35.385000Z",
  "file_hash": "a45625fb829883e4fe7fdd7c66c9981613534548ede5e15286c23c25c3c5d3ac",
  "private": false,
  "record": {
    "abstract": "Cosmology is an attracting subject for students but usually difficult to deal\nwith if general relativity is not known. In this article, we first recall the\nNewtonian derivation of the Friedmann equations which govern the dynamics of\nour universe and discuss the validity of such a derivation. We then study the\nequations of evolution of the universe in terms of a dynamical system. This\nsums up the different behaviors of our universe and enables to address some\ncosmological problems.",
    "arxiv_id": "physics/0108066",
    "authors": [
      "Jean-Philippe Uzan",
      "Roland Lehoucq"
    ],
    "categories": [
      "physics.ed-ph",
      "physics.gen-ph"
    ],
    "doi": "10.1088/0143-0807/22/4/312",
    "journal_ref": "Eur. J. Phys. 22 (2001) 371-384",
    "title": "A Dynamical Study of the Friedmann Equations",
    "url": "https://arxiv.org/abs/physics/0108066"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ea22d7d0-83e1-492e-bae7-bd26885fb333",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}