{
  "annotation_id": "d03c2600-e800-409f-bb2c-e81c743fbf33",
  "date_created": "2026-03-02T18:00:35.519000Z",
  "date_modified": "2026-03-02T18:00:35.519000Z",
  "file_hash": "36d4a19e0c3c270dee25d3c757be31ebcdd18fca909435435a88f909c4e4e0b8",
  "private": false,
  "record": {
    "abstract": "Does the mass of bodies depend on their velocity? Is the mass additive if\nseparate bodies are joined together to form a composite system? Is the mass of\nan isolated system conserved? Different teachers of physics and specialists\ngive different answers to these questions because there is no general agreement\non the definition of mass..We shall show that the notion of the\nvelocity-dependent relativistic mass should be given preference over that of\nthe rest mass.",
    "arxiv_id": "physics/0103051",
    "authors": [
      "R. I. Khrapko"
    ],
    "categories": [
      "physics.gen-ph"
    ],
    "doi": "10.1070/PU2000v043n12ABEH000778",
    "journal_ref": "Phys.Usp.43:1267,2000",
    "title": "What is mass?",
    "url": "https://arxiv.org/abs/physics/0103051"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0492b45e-6eb7-49bf-9ef1-ccb9e63420dd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}