{
  "abstract": "We offer a classification of a broad and practically relevant class of symmetric double saddle-point system. At the core of the paper is the division of the associated matrices into ``block-arrow'' and ``block-tridiagonal'' forms. We describe relevant applications, invertibility conditions, spectral properties, and block preconditioners. Our discussion is kept within a general framework rather than tailored to specific applications.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.14157",
  "author_total": 2,
  "authors": [
    {
      "name": "Susanne Bradley"
    },
    {
      "name": "Chen Greif"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/97tx9kmhn7jed.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.14157",
  "fulltext_url": null,
  "id": "97tx9kmhn7jed",
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  "landing_url": "https://arxiv.org/abs/2605.14157",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cs.NA"
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      "arxiv",
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      "openalex",
      "1703|Matrix Theory and Algorithms"
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  "openalex": "W7161252744",
  "pdf_url": "https://arxiv.org/pdf/2605.14157",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/97tx9kmhn7jed.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:19Z",
      "native_id": "2605.14157",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.14157"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.NA",
      "subfield": "numerical-analysis"
    }
  ],
  "title": "Classification of Double Saddle-Point Systems",
  "title_text": "Classification of Double Saddle-Point Systems",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:19Z",
  "url": "https://research.draconitic.com/paper/97tx9kmhn7jed",
  "venue": "arXiv",
  "versions": []
}