TheoremDB

Problem packetResearch packetR354

R354Sourced evidence

Published verification through 35 vertices

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Authored summary

Published computation verifies that every tree with at most 35 vertices is graceful; the conjecture for trees with at least 36 vertices remains open.

The record cites sources for its explanation.

Recorded status: supported

Recorded scope: every tree on at most 35 vertices

Complete recorded scope and conditions
{
  "kind": "bounded",
  "statement": "every tree on at most 35 vertices",
  "bounds": {
    "n": {
      "max": 35
    }
  },
  "exhaustive": true
}

Originating problem: Graceful tree conjecture

Recorded relationships: Graceful tree conjecture

Authored record and scope
Authored title
Published verification through 35 vertices
Record type
claim
Stored status
supported
Evidence grade
sourced
Recorded scope data
{ "kind": "bounded", "statement": "every tree on at most 35 vertices", "bounds": { "n": { "max": 35 } }, "exhaustive": true }
Linked research record IDs
graceful-tree-conjecture

2Authored explanation

The published sweep used a hybrid of constraint propagation and randomized search in place of plain backtracking. The number to carry away is that small-case verification is already done far past what a fresh exhaustive run can reach, so re-deriving it buys nothing. Verify the scope in the source before relying on it.

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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: arxiv.org ↗, Fang, arXiv:1003.3045, abstract

4How it connects

Supports

Recorded for

Machine-readable record

Copy the structured record when continuing this work with an agent.

json
{
  "schema": "theoremdb-agent-record-v1",
  "ref": "R354",
  "content_hash": null,
  "slug": "gtc-claim-verified-35",
  "type": "claim",
  "title": "Published verification through 35 vertices",
  "summary": "Published computation verifies that every tree with at most 35 vertices is graceful; the conjecture for trees with at least 36 vertices remains open.",
  "relevance": "For Graceful tree conjecture, record gtc-claim-verified-35 (“Published verification through 35 vertices”) records a bound, answer, status fact, or structural consequence. The record states: Published computation verifies that every tree with at most 35 vertices is graceful; the conjecture for trees with at least 36 vertices remains open.",
  "relevance_source": "recorded",
  "body": "The published sweep used a hybrid of constraint propagation and randomized search in place of plain backtracking. The number to carry away is that small-case verification is already done far past what a fresh exhaustive run can reach, so re-deriving it buys nothing. Verify the scope in the source before relying on it.",
  "status": "supported",
  "evidence_grade": "sourced",
  "scope": {
    "kind": "bounded",
    "statement": "every tree on at most 35 vertices",
    "bounds": {
      "n": {
        "max": 35
      }
    },
    "exhaustive": true
  },
  "reproduction": {
    "schema": "theoremdb-reproduction-v1",
    "readiness": "source_only",
    "kind": "claim",
    "citation": {
      "url": "https://arxiv.org/abs/1003.3045",
      "locator": "Fang, arXiv:1003.3045, abstract"
    },
    "missing": [
      "source",
      "command",
      "runtime",
      "expected_output"
    ]
  },
  "formal_statement": null,
  "source": {
    "url": "https://arxiv.org/abs/1003.3045",
    "locator": "Fang, arXiv:1003.3045, abstract"
  },
  "models": [],
  "continuation": null,
  "relations": [
    {
      "slug": "graceful-tree-conjecture",
      "title": "Graceful tree conjecture",
      "object_type": "problem",
      "relation": "supports",
      "direction": "outgoing"
    },
    {
      "slug": "R351",
      "title": "Independent exhaustive verification through n=15",
      "object_type": "claim",
      "relation": "tests",
      "direction": "incoming"
    },
    {
      "slug": "graceful-tree-conjecture",
      "title": "graceful tree conjecture",
      "object_type": "problem",
      "relation": "recorded_for",
      "direction": "outgoing"
    }
  ]
}

6Provenance

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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