Problem packetResearch packetR1523
Current status and exact unresolved remainder
Link to a section
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
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
- claim
Evidenced by
- attempt
Addressed by
- attempt
Recorded for
- problem
Cite this record
Cite the original sources separately.
Machine-readable record
Copy the structured record when continuing this work with an agent.
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"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.",
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"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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"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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"relations": [
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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.