{
  "abstract": "We study a geometric action on a CAT(0) space of a finite index subgroup of the quotient group of the braid group on 4 strands by its center.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "name": "Sylvain Barré"
    },
    {
      "name": "Mikaël Pichot"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/eaykc4xpvc2s8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.1912.13391",
  "fulltext_url": null,
  "id": "eaykc4xpvc2s8",
  "issns": [
    "0138-4821",
    "2191-0383"
  ],
  "landing_url": "https://ubs.hal.science/hal-04541124v1",
  "language": "en",
  "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": [
    [
      "hal",
      "0.math"
    ]
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  "openalex": null,
  "pdf_url": "https://ubs.hal.science/hal-04541124/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "Springer Verlag",
  "ris": "https://research.draconitic.com/paper/eaykc4xpvc2s8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:46Z",
      "native_id": "hal-04541124",
      "source": "hal",
      "url": "https://ubs.hal.science/hal-04541124v1"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "hal:0.math",
      "subfield": "general"
    }
  ],
  "title": "A virtual geometric action of a braid group",
  "title_text": "A virtual geometric action of a braid group",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:46Z",
  "url": "https://research.draconitic.com/paper/eaykc4xpvc2s8",
  "venue": "Beiträge zur Algebra und Geometrie = Contributions to Algebra and Geometry",
  "versions": []
}