{
  "annotation_id": "b71c77a2-5405-4cce-9b8c-ce28253ca651",
  "date_created": "2026-03-02T18:02:31.108000Z",
  "date_modified": "2026-03-02T18:02:31.108000Z",
  "file_hash": "e8c2b53a4a782a98f7d6edfa26810b2fdc4754b52f551afa407cc4eb2a8af395",
  "private": false,
  "record": {
    "abstract": "This paper reviews some characterizations of positive matrices and discusses\nwhich lead to useful parametrizations. It is argued that one of them, which we\ndub the Schur-Constantinescu parametrization is particularly useful. Two new\napplications of it are given. One shows all block-Toeplitz states are PPT. The\nother application is to relaxation rates.",
    "arxiv_id": "quant-ph/0610020",
    "authors": [
      "M. C. Tseng",
      "Hong Zhou",
      "V. Ramakrishna"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Parametrizations of Positive Matrices With Applications",
    "url": "https://arxiv.org/abs/quant-ph/0610020"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ee8c2e2d-f452-4c22-b2d6-ebc51fda3a4c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}