{
  "abstract": "By using the forward order law for the Drazin inverse of matrix products, we investigate the Drazin inverse of 2×2 block triangular matrices. A necessary and sufficient condition for ABOCD=ADBDOCD is presented. Notably, this condition is expressed exclusively in terms of rank equalities.",
  "abstract_shown": true,
  "affiliations": [
    "School of Mathematics and Computational Science, Wuyi University, Jiangmen 529020, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Ziyang Pan"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhiping Xiong",
      "orcid": "0000-0001-5258-4392"
    },
    {
      "affs": [
        0
      ],
      "name": "Yingying Qin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5y85y32cph3cx.bib",
  "cited_by": 0,
  "doi": "10.3390/axioms15100750",
  "fulltext_url": null,
  "id": "5y85y32cph3cx",
  "issns": [
    "2075-1680"
  ],
  "landing_url": "https://www.mdpi.com/2075-1680/15/10/750",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1703|Matrix Theory and Algorithms"
    ]
  ],
  "openalex": "W7221065401",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/5y85y32cph3cx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:30Z",
      "native_id": "10.3390/axioms15100750",
      "source": "crossref",
      "url": "https://www.mdpi.com/2075-1680/15/10/750"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "journal-openalex:F26",
      "subfield": "general"
    }
  ],
  "title": "A Note on the Drazin Inverse of 2 × 2 Block Triangular Matrices",
  "title_text": "A Note on the Drazin Inverse of 2 × 2 Block Triangular Matrices",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:30Z",
  "url": "https://research.draconitic.com/paper/5y85y32cph3cx",
  "venue": "Axioms",
  "versions": []
}