{
  "annotation_id": "9bde7b80-1993-4952-a101-781ccbbb6391",
  "date_created": "2026-03-02T18:01:32.243000Z",
  "date_modified": "2026-03-02T18:01:32.243000Z",
  "file_hash": "5cd41f6100dc4c651d325af6e706868fb3f1bec31e4b7bf5204d2437cf630ad1",
  "private": false,
  "record": {
    "abstract": "We wish to verify that the mortality deceleration (or decrease) is a\nconsequence of the bending of the shape parameter at old ages. This\ninvestigation is based upon the Weon model (the Weibull model with an\nage-dependent shape parameter) for human survival and mortality curves.\nAccording to the Weon model, we are well able to describe the mortality\ndecrease after the mortality plateau, including the mortality deceleration.\nFurthermore, we are able to simply define the mathematical limit of longevity\nby the mortality decrease. From the demographic analysis of the historical\ntrends in Switzerland (1876-2001) and Sweden (1861-2001), and the most recent\ntrends in the other eleven developed countries (1996-2001), we confirm that the\nbending of the shape parameter after characteristic life is correlated with the\nmortality deceleration (or decrease). As a consequence, this bending of the\nshape parameters and the mortality deceleration is associated with the\nmathematical limit on longevity. These results suggest that the mathematical\nlimit of longevity can be induced by the mortality deceleration (or decrease)\nin nature. These findings will give us a breakthrough for studying the\nmortality dynamics at the highest ages.",
    "arxiv_id": "q-bio/0402034",
    "authors": [
      "Byung Mook Weon"
    ],
    "categories": [
      "q-bio.PE"
    ],
    "title": "Mortality decrease and mathematical limit of longevity",
    "url": "https://arxiv.org/abs/q-bio/0402034"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "96757cb4-6b47-4161-bcfa-f16ab4c33170",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}