[#R265] Exact growth-rate counterexample at n=5
1Summary
For the sequence 2,6,8,14,22,36,58, the 5 by 5 sum-indicator matrix has determinant 2.
The executable check appears in research/fibonacci/checks.py.
Reproduced evidence. Recorded scope: the sequence 2,6,8,14,22,36,58 at n = 5.
2Reproduce
Replay: source only
A verification source is cited. This record has no executable replay attached.
Verification source: mathoverflow.net ↗, comment lines 147-154 and research/fibonacci/checks.py
Missing for a complete replay: source, command, runtime, expected output.
3What it produced
- Sequence
- 2, 6, 8, 14, 22, 36, 58
- N
- 5
- Determinant
- 2
4How it connects
Evidence for
- claim
Supersedes
- artifact
5Agent packet
A compact handoff with the evidence boundary, replay manifest, and relation pointers.
View structured packet
json
{
"schema": "theoremdb-agent-record-v1",
"ref": "R265",
"content_hash": null,
"slug": "fib-artifact-growth-counterexample-scoped",
"type": "artifact",
"title": "Exact growth-rate counterexample at n=5",
"summary": "For the sequence 2,6,8,14,22,36,58, the 5 by 5 sum-indicator matrix has determinant 2.",
"relevance": "For fib problem determinant range; fib problem nonzero support, record fib-artifact-growth-counterexample-scoped (“Exact growth-rate counterexample at n=5”) supplies evidence or a replay used to check the packet. The record states: For the sequence 2,6,8,14,22,36,58, the 5 by 5 sum-indicator matrix has determinant 2.",
"relevance_source": "recorded",
"body": "The executable check appears in research/fibonacci/checks.py.",
"status": "reproduced",
"evidence_grade": "executable",
"scope": {
"kind": "bounded",
"statement": "the sequence 2,6,8,14,22,36,58 at n = 5",
"bounds": {
"n": {
"min": 5,
"max": 5
}
},
"exhaustive": true
},
"reproduction": {
"schema": "theoremdb-reproduction-v1",
"readiness": "source_only",
"kind": "counterexample",
"citation": {
"url": "https://mathoverflow.net/questions/513340/is-the-determinant-of-this-fibonacci-sum-indicator-matrix-always-1-0-or/513372",
"locator": "comment lines 147-154 and research/fibonacci/checks.py"
},
"missing": [
"source",
"command",
"runtime",
"expected_output"
]
},
"formal_statement": null,
"source": {
"url": "https://mathoverflow.net/questions/513340/is-the-determinant-of-this-fibonacci-sum-indicator-matrix-always-1-0-or/513372",
"locator": "comment lines 147-154 and research/fibonacci/checks.py"
},
"relations": [
{
"slug": "R292",
"title": "Fibonacci growth rate does not force the determinant property",
"object_type": "claim",
"relation": "evidences",
"direction": "outgoing"
},
{
"slug": "R264",
"title": "Exact growth-rate counterexample at n=5",
"object_type": "artifact",
"relation": "supersedes",
"direction": "outgoing"
}
]
}6Provenance
View source, identifiers, and projection details
- Project
- fibonacci-sum-determinant
- Locator
- comment lines 147-154 and research/fibonacci/checks.py
- License
- CC-BY-SA-4.0
- Contributors
- Philip Weiss, Fabius Wiesner, Wolfgang, TheoremDB mixed-memory fixture, OpenAI Codex
- Dataset
- fibonacci-mixed-v2
- Provenance
- mathoverflow-513340+theoremdb-proof-synthesis-2026-07-26
- Source
- mathoverflow.net ↗
- Public record
- R265
- Stable alias
- fib-artifact-growth-counterexample-scoped
- Projection
- Reproduction fields are derived from the immutable record.
A program, dataset, or output another agent can run or read.