{
  "abstract": "We consider the problem of deciding whether or not there is an epimorphism from the class of finitely presented groups to a fixed finite group. We show this problem is $\\mathsf{NP}$-complete when the target is a non-nilpotent dihedral group. This complements work of Kuperberg and Samperton (2018, Geom. Topol.) who showed the same result when the target is a fixed finite non-abelian simple group. We also include a survey of complexity and reduction results when the source and target are classes of finitely presented groups.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.39487",
  "author_total": 3,
  "authors": [
    {
      "name": "Murray Elder"
    },
    {
      "name": "Jerry Shen"
    },
    {
      "name": "Armin Weiß"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1nf8qt5rhhvw2.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.39487",
  "fulltext_url": null,
  "id": "1nf8qt5rhhvw2",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.39487",
  "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",
      "math.GR"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.39487",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1nf8qt5rhhvw2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:32Z",
      "native_id": "2610.39487",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.39487"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.GR",
      "subfield": "algebra-number-theory"
    }
  ],
  "title": "Epimorphism testing with dihedral targets",
  "title_text": "Epimorphism testing with dihedral targets",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:50Z",
  "url": "https://research.draconitic.com/paper/1nf8qt5rhhvw2",
  "venue": "arXiv",
  "versions": []
}