{
  "abstract": "Let $\\mathcal O_{2A_1}$ be the next-to-minimal nilpotent orbit of the complex simple Lie algebra of type $E_7$. Let $\\mathfrak p_7$ be the maximal parabolic subalgebra corresponding to the simple root $α_7$, and let $\\mathfrak u^+$ be its nilpotent radical. We prove that the affinization $T^*(\\mathcal O_{2A_1}\\cap\\mathfrak u^+)^{\\mathrm{aff}}$ of the cotangent bundle of $\\mathcal O_{2A_1}\\cap\\mathfrak u^+$ is isomorphic to the nilpotent orbit closure $\\overline{\\mathcal O}_{2A_1}$ as affine varieties.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.29537",
  "author_total": 1,
  "authors": [
    {
      "name": "Boming Jia"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d92mbeybcbcsg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.29537",
  "fulltext_url": null,
  "id": "d92mbeybcbcsg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.29537",
  "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.RT"
    ],
    [
      "openalex",
      "2610|Advanced Algebra and Geometry"
    ]
  ],
  "openalex": "W7214350128",
  "pdf_url": "https://arxiv.org/pdf/2609.29537",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d92mbeybcbcsg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:24:15Z",
      "native_id": "2609.29537",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.29537"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.RT",
      "subfield": "algebra-number-theory"
    }
  ],
  "title": "A Cotangent Model for the Next-to-Minimal Orbit of E7",
  "title_text": "A Cotangent Model for the Next-to-Minimal Orbit of E7",
  "type": "preprint",
  "updated_at": "2026-10-30T12:24:15Z",
  "url": "https://research.draconitic.com/paper/d92mbeybcbcsg",
  "venue": "arXiv",
  "versions": []
}