TheoremDB

Problem packetResearch packetR221

R221Computational evidence

Sixty iterations leave 31 distinct endpoints

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Authored summary

The 199 starts produce 31 distinct values after exactly 60 applications of the map.

The record reports a computation within its stated scope.

Recorded status: available

Recorded scope: starts 1 through 199, each iterated exactly 60 times

Complete recorded scope and conditions
{
  "kind": "bounded",
  "statement": "starts 1 through 199, each iterated exactly 60 times",
  "bounds": {
    "start": {
      "min": 1,
      "max": 199
    },
    "iterations": {
      "min": 60,
      "max": 60
    }
  },
  "exhaustive": true
}

Originating problem: Merging of orbits under adding the product of nonzero digits

Source files are not attached to this record. Check the recorded source for access.

Authored record and scope
Authored title
Sixty iterations leave 31 distinct endpoints
Record type
artifact
Stored status
available
Evidence grade
computational
Recorded scope data
{ "kind": "bounded", "statement": "starts 1 through 199, each iterated exactly 60 times", "bounds": { "start": { "min": 1, "max": 199 }, "iterations": { "min": 60, "max": 60 } }, "exhaustive": true }

2Authored explanation

The original candidate said the runs "produced only 31 distinct values," though the 199 starting values are already distinct. The code measures the endpoints after exactly 60 steps. Its correct result is that \(\{T^{60}(s):1\leq s\leq199\}\) has size 31. Equal endpoints certify that the corresponding finite orbits have merged by that time.

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Replay material: partial

3Reproduce

Replay package: partial

Part of the replay path is recorded. Check the missing fields before comparing a new run.

Verification source: github.com ↗, research/candidate-screening/multi.py, digit-driven iteration section

Missing for a complete replay: command, runtime, expected output.

Recorded artifact fields

4What it produced

5How it connects

Recorded for

Machine-readable record

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

json
{
  "schema": "theoremdb-agent-record-v1",
  "ref": "R221",
  "content_hash": null,
  "slug": "dpi-artifact-60-step-endpoints",
  "type": "artifact",
  "title": "Sixty iterations leave 31 distinct endpoints",
  "summary": "The 199 starts produce 31 distinct values after exactly 60 applications of the map.",
  "relevance": "For Merging of orbits under adding the product of nonzero digits, record dpi-artifact-60-step-endpoints (“Sixty iterations leave 31 distinct endpoints”) supplies evidence or a replay used to check the packet. The record states: The 199 starts produce 31 distinct values after exactly 60 applications of the map.",
  "relevance_source": "recorded",
  "body": "The original candidate said the runs \"produced only 31 distinct values,\" though the 199 starting values are already distinct. The code measures the endpoints after exactly 60 steps. Its correct result is that \\(\\{T^{60}(s):1\\leq s\\leq199\\}\\) has size 31. Equal endpoints certify that the corresponding finite orbits have merged by that time.",
  "status": "available",
  "evidence_grade": "computational",
  "scope": {
    "kind": "bounded",
    "statement": "starts 1 through 199, each iterated exactly 60 times",
    "bounds": {
      "start": {
        "min": 1,
        "max": 199
      },
      "iterations": {
        "min": 60,
        "max": 60
      }
    },
    "exhaustive": true
  },
  "reproduction": {
    "schema": "theoremdb-reproduction-v1",
    "readiness": "partial",
    "kind": "python_computation",
    "source": "research/candidate-screening/multi.py",
    "citation": {
      "url": "https://github.com/philipfweiss/theoremdb/blob/main/research/candidate-screening/multi.py",
      "locator": "research/candidate-screening/multi.py, digit-driven iteration section"
    },
    "missing": [
      "command",
      "runtime",
      "expected_output"
    ]
  },
  "formal_statement": null,
  "source": {
    "url": "https://github.com/philipfweiss/theoremdb/blob/main/research/candidate-screening/multi.py",
    "locator": "research/candidate-screening/multi.py, digit-driven iteration section"
  },
  "models": [],
  "relations": [
    {
      "slug": "R224",
      "title": "Loomis conjectured that every orbit joins the orbit of 1",
      "object_type": "claim",
      "relation": "tests",
      "direction": "outgoing"
    },
    {
      "slug": "digit-product-iteration-trajectories",
      "title": "digit product iteration trajectories",
      "object_type": "problem",
      "relation": "recorded_for",
      "direction": "outgoing"
    }
  ]
}

7Provenance

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