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Problem packetResearch packetR1166

R1166Sourced evidence

Current status and unresolved remainder

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Authored summary

UNKNOWN as of 2026-07-31. The MathOverflow page remains open with zero answers. A 2023 paper proves the claim for maximal triangle-free graphs of maximum degree below seven and verifies bounded orders, while describing the unrestricted Reed-conjecture case as unresolved. Give a proof producing a proper five-colouring for every finite simple triangle-free graph of maximum degree at most six, or exhibit a finite triangle-free graph with maximum degree at most six and chromatic number at least six.

The record cites sources for its explanation.

Recorded status: reported

Recorded scope: No scope is recorded.

Originating problem: Five-colouring triangle-free graphs of maximum degree six

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. The MathOverflow page remains open with zero answers. A 2023 paper proves the claim for maximal triangle-free graphs of maximum degree below seven and verifies bounded orders, while describing the unrestricted Reed-conjecture case as unresolved.

A complete resolution must satisfy this condition: Give a proof producing a proper five-colouring for every finite simple triangle-free graph of maximum degree at most six, or exhibit a finite triangle-free graph with maximum degree at most six and chromatic number at least six.

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3Evidence

Replay package: source only

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

Verification source: mathoverflow.net ↗, See dataset.references[0] for the exact external source and locator.

4How it connects

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  "ref": "R1166",
  "content_hash": null,
  "slug": "triangle-free-degree-six-five-colouring-claim-status-20260731",
  "type": "claim",
  "title": "Current status and unresolved remainder",
  "summary": "UNKNOWN as of 2026-07-31. The MathOverflow page remains open with zero answers. A 2023 paper proves the claim for maximal triangle-free graphs of maximum degree below seven and verifies bounded orders, while describing the unrestricted Reed-conjecture case as unresolved. Give a proof producing a proper five-colouring for every finite simple triangle-free graph of maximum degree at most six, or exhibit a finite triangle-free graph with maximum degree at most six and chromatic number at least six.",
  "relevance": "For triangle free degree six five colouring, pins the dated research frontier: UNKNOWN as of 2026-07-31. The MathOverflow page remains open with zero answers. A 2023 paper proves the claim for maximal triangle-free graphs of maximum degree below seven and verifies bounded orders, while describing the unrestricted Reed-conjecture case as unresolved. Give a proof producing a.",
  "relevance_source": "recorded",
  "body": "UNKNOWN as of 2026-07-31. The MathOverflow page remains open with zero answers. A 2023 paper proves the claim for maximal triangle-free graphs of maximum degree below seven and verifies bounded orders, while describing the unrestricted Reed-conjecture case as unresolved.\n\nA complete resolution must satisfy this condition: Give a proof producing a proper five-colouring for every finite simple triangle-free graph of maximum degree at most six, or exhibit a finite triangle-free graph with maximum degree at most six and chromatic number at least six.",
  "status": "reported",
  "evidence_grade": "sourced",
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    "citation": {
      "url": "https://mathoverflow.net/questions/37923/does-every-triangle-free-graph-with-maximum-degree-at-most-6-have-a-5-colouring",
      "locator": "See dataset.references[0] for the exact external source and locator."
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    "url": "https://mathoverflow.net/questions/37923/does-every-triangle-free-graph-with-maximum-degree-at-most-6-have-a-5-colouring",
    "locator": "See dataset.references[0] for the exact external source and locator."
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  "models": [],
  "relations": [
    {
      "slug": "R1165",
      "title": "Resolve the stated acceptance condition",
      "object_type": "attempt",
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    {
      "slug": "triangle-free-degree-six-five-colouring",
      "title": "triangle free degree six five colouring",
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6Provenance

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

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