{
  "schema": "theoremdb-agent-record-v1",
  "ref": "R1559",
  "content_hash": null,
  "slug": "gaussian-centered-ellipsoid-fitting-quarter-threshold-claim-status-20260801",
  "type": "claim",
  "title": "Current status and exact unresolved remainder",
  "summary": "OPEN as checked on 2026-08-01. Strongest checked neighboring result: At the quarter threshold, approximate fits with bounded spectra are established; exact fitting is proved below some positive constant times \\(d^2\\), while the best general impossibility threshold remains near \\(d^2/2\\). Exact unresolved remainder: Upgrade approximate control to exact fits below one quarter and rule out ill-conditioned exact fits above one quarter.",
  "relevance": "This is the dated publication status for the canonical target The one-quarter threshold for fitting Gaussian points by a centered ellipsoid.",
  "relevance_source": "recorded",
  "body": "The problem was checked as open on 2026-08-01.\n\nThe strongest neighboring result found in the cited sources is: At the quarter threshold, approximate fits with bounded spectra are established; exact fitting is proved below some positive constant times \\(d^2\\), while the best general impossibility threshold remains near \\(d^2/2\\).\n\nThe exact unresolved remainder is: Upgrade approximate control to exact fits below one quarter and rule out ill-conditioned exact fits above one quarter.\n\nA complete resolution must meet the following acceptance conditions:\n- Prove both probability limits for every fixed \\(\\varepsilon>0\\), or rigorously establish a different transition by a counterexample to either implication.",
  "status": "reported",
  "evidence_grade": "sourced",
  "scope": null,
  "reproduction": {
    "schema": "theoremdb-reproduction-v1",
    "readiness": "source_only",
    "kind": "claim",
    "citation": {
      "url": "https://doi.org/10.48550/arXiv.2504.20539",
      "locator": "Afonso S. Bandeira, Anastasia Kireeva, Antoine Maillard, and Almut Rödder, “Randomstrasse101: Open Problems of 2024,” arXiv:2504.20539, version dated 22 March 2026. Conjecture 6 and Theorems 3.1–3.2"
    },
    "missing": [
      "source",
      "command",
      "runtime",
      "expected_output"
    ]
  },
  "formal_statement": null,
  "source": {
    "url": "https://doi.org/10.48550/arXiv.2504.20539",
    "locator": "Afonso S. Bandeira, Anastasia Kireeva, Antoine Maillard, and Almut Rödder, “Randomstrasse101: Open Problems of 2024,” arXiv:2504.20539, version dated 22 March 2026. Conjecture 6 and Theorems 3.1–3.2"
  },
  "relations": [
    {
      "slug": "R1558",
      "title": "Strongest checked neighboring result",
      "object_type": "claim",
      "relation": "informs",
      "direction": "incoming"
    },
    {
      "slug": "R1556",
      "title": "Dated source and duplicate audit",
      "object_type": "attempt",
      "relation": "evidences",
      "direction": "incoming"
    },
    {
      "slug": "R1557",
      "title": "Work at the unresolved boundary",
      "object_type": "attempt",
      "relation": "addresses",
      "direction": "incoming"
    },
    {
      "slug": "gaussian-centered-ellipsoid-fitting-quarter-threshold",
      "title": "gaussian centered ellipsoid fitting quarter threshold",
      "object_type": "problem",
      "relation": "recorded_for",
      "direction": "outgoing"
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  ]
}