Problem packetResearch packetR922
Current status and unresolved remainder
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The record cites sources for its explanation.
Recorded status: reported
Recorded scope: No scope is recorded.
Originating problem: Least uniform modulus of an abelian-square-free morphism on four letters
Authored record and scope
- Authored title
- Current status and unresolved remainder
- Record type
- claim
- Stored status
- reported
- Evidence grade
- sourced
2Authored explanation
UNKNOWN as of 2026-07-31. An 85-uniform abelian-square-free endomorphism is known and was shown minimal inside its cyclic-symmetry form; the checked sources do not identify the unrestricted least modulus.
A complete resolution must satisfy this condition: Give an \(L\)-uniform morphism with a complete finite-test or direct proof that it preserves abelian-square-freeness, and prove that no such morphism exists for any smaller modulus.
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3Evidence
A verification source is cited. This record has no executable replay attached.
Verification source: doi.org ↗, See dataset.references[0] for the exact external source and locator.
4How it connects
Addressed by
- attempt
Recorded for
- problem
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"summary": "UNKNOWN as of 2026-07-31. An 85-uniform abelian-square-free endomorphism is known and was shown minimal inside its cyclic-symmetry form; the checked sources do not identify the unrestricted least modulus. Give an \\(L\\)-uniform morphism with a complete finite-test or direct proof that it preserves abelian-square-freeness, and prove that no such morphism exists for any smaller modulus.",
"relevance": "For abelian square free uniform morphism minimum, pins the dated research frontier: UNKNOWN as of 2026-07-31. An 85-uniform abelian-square-free endomorphism is known and was shown minimal inside its cyclic-symmetry form; the checked sources do not identify the unrestricted least modulus. Give an \\(L\\)-uniform morphism with a complete finite-test or direct proof that it preserves.",
"relevance_source": "recorded",
"body": "UNKNOWN as of 2026-07-31. An 85-uniform abelian-square-free endomorphism is known and was shown minimal inside its cyclic-symmetry form; the checked sources do not identify the unrestricted least modulus.\n\nA complete resolution must satisfy this condition: Give an \\(L\\)-uniform morphism with a complete finite-test or direct proof that it preserves abelian-square-freeness, and prove that no such morphism exists for any smaller modulus.",
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"source": {
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{
"slug": "R921",
"title": "Resolve the stated acceptance condition",
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}6Provenance
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