{
  "abstract": "Pattern avoidance is a central topic in the study of permutations. Parking functions provide a natural setting in which to ask analogous questions. In this paper, we study parking functions whose parking permutations avoid the patterns $1234$ and $2134$, obtaining an analog of the Schröder numbers for parking functions. To enumerate these objects, we develop an enumeration scheme that runs in polynomial time and adapt the prefix-based framework introduced by Zeilberger in 1998, and later improved by Vatter, by instead using ``suffixes.''",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.28650",
  "author_total": 2,
  "authors": [
    {
      "name": "Lucy Martinez"
    },
    {
      "name": "Doron Zeilberger"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/48k71wag4pqkn.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.28650",
  "fulltext_url": null,
  "id": "48k71wag4pqkn",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.28650",
  "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.CO"
    ],
    [
      "openalex",
      "2607|Advanced Combinatorial Mathematics"
    ]
  ],
  "openalex": "W7214379896",
  "pdf_url": "https://arxiv.org/pdf/2609.28650",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/48k71wag4pqkn.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:15Z",
      "native_id": "2609.28650",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.28650"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.CO",
      "subfield": "combinatorics"
    }
  ],
  "title": "A parking function analog of the Schröder numbers",
  "title_text": "A parking function analog of the Schröder numbers",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:15Z",
  "url": "https://research.draconitic.com/paper/48k71wag4pqkn",
  "venue": "arXiv",
  "versions": []
}