TheoremDB

Problem packetResearch packetR1523

R1523Sourced evidence

Current status and exact unresolved remainder

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Authored summary

OPEN as checked on 2026-08-01. Strongest checked neighboring result: The conjecture holds for important tame or universal settings and under strong large-cardinal assumptions. Exact unresolved remainder: The general ZFC theorem for arbitrary AECs remains open.

The record cites sources for its explanation.

Recorded status: reported

Recorded scope: No scope is recorded.

Originating problem: Shelah's eventual categoricity conjecture for AECs

Authored record and scope
Authored title
Current status and exact unresolved remainder
Record type
claim
Stored status
reported
Evidence grade
sourced

2Authored explanation

The problem was checked as open on 2026-08-01.

The strongest neighboring result found in the cited sources is: The conjecture holds for important tame or universal settings and under strong large-cardinal assumptions.

The exact unresolved remainder is: The general ZFC theorem for arbitrary AECs remains open.

A complete resolution must meet the following acceptance conditions: - Prove the stated tail transfer in ZFC with an explicit or definable threshold H(κ). - Or construct an AEC with arbitrarily large models categorical once above the proposed threshold but failing categoricity later.

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Replay material: source only

3Evidence

Replay package: source only

A verification source is cited. This record has no executable replay attached.

Verification source: shelah.logic.at ↗, S. Shelah and S. Vasey, Categoricity and multidimensional diagrams, Sh:842 (2024). eventual categoricity theorem under strongly compact cardinals

4What was measured

5How it connects

Informed by

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Machine-readable record

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  "type": "claim",
  "title": "Current status and exact unresolved remainder",
  "summary": "OPEN as checked on 2026-08-01. Strongest checked neighboring result: The conjecture holds for important tame or universal settings and under strong large-cardinal assumptions. Exact unresolved remainder: The general ZFC theorem for arbitrary AECs remains open.",
  "relevance": "This is the dated publication status for the canonical target Shelah's eventual categoricity conjecture for AECs.",
  "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: The conjecture holds for important tame or universal settings and under strong large-cardinal assumptions.\n\nThe exact unresolved remainder is: The general ZFC theorem for arbitrary AECs remains open.\n\nA complete resolution must meet the following acceptance conditions:\n- Prove the stated tail transfer in ZFC with an explicit or definable threshold H(κ).\n- Or construct an AEC with arbitrarily large models categorical once above the proposed threshold but failing categoricity later.",
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      "url": "https://shelah.logic.at/papers/842/",
      "locator": "S. Shelah and S. Vasey, Categoricity and multidimensional diagrams, Sh:842 (2024). eventual categoricity theorem under strongly compact cardinals"
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  "formal_statement": null,
  "source": {
    "url": "https://shelah.logic.at/papers/842/",
    "locator": "S. Shelah and S. Vasey, Categoricity and multidimensional diagrams, Sh:842 (2024). eventual categoricity theorem under strongly compact cardinals"
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      "title": "Strongest checked neighboring result",
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    {
      "slug": "R1520",
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    {
      "slug": "R1521",
      "title": "Work at the unresolved boundary",
      "object_type": "attempt",
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    {
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7Provenance

View source, identifiers, and projection details

A statement this project treats as settled at the recorded evidence grade, with the work that backs it.

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