{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T20:21:37Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 3,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T10:00:00Z",
      "ingestedAt": "2026-10-06T07:01:53+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:51:53+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q12321",
    "registryId": "vr.tr.palindrome",
    "name": "palindrome",
    "version": "0.2.0-wave.3",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "XCT.QLT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q12321/",
  "model": {
    "registry_id": "vr.tr.palindrome",
    "name": "palindrome",
    "purpose": "Let an agent recognise and test palindromes in text, numbers and sequences, explain the conventions used in each field, distinguish palindromes from related patterns such as repdigits and mirror symmetry, and relay examples and results.",
    "definition": "A word, phrase, number or other sequence that reads the same backwards as forwards, such as level, 12321 or a DNA sequence whose complementary strand reads the same in reverse; palindromes appear in wordplay, mathematics, computing and molecular biology, with conventions about ignoring spaces, punctuation and case in text.",
    "what_it_is_for": "Not for anything; a pattern of symmetry in sequences.",
    "affordances": [
      "test whether a string or number is a palindrome",
      "explain conventions for text, numbers and biology",
      "generate or find examples",
      "distinguish related patterns"
    ],
    "distinguishing_features": [
      "Reversal symmetry of a sequence",
      "Field-specific conventions",
      "Occurs in language, numbers, code and DNA",
      "Simple to test algorithmically"
    ],
    "appearance": "Not visible in itself; a sequence symmetric about its centre.",
    "visual_identification": [
      "Reads the same in both directions",
      "Text conventions ignore spaces, punctuation and case",
      "Repdigits and mirror-symmetric shapes are related but distinct"
    ],
    "physical_properties": [],
    "families_and_kinds": [
      "word and sentence palindromes",
      "palindromic numbers",
      "palindromic sequences in DNA and RNA",
      "palindromic dates and times",
      "palindromic music and structures",
      "near-palindromes and semordnilaps"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "mirror symmetric object",
        "why": "symmetry under reversal"
      },
      {
        "relation": "is confused with",
        "target": "repdigit",
        "why": "a number with repeated digits, a special case"
      },
      {
        "relation": "is used in",
        "target": "wordplay",
        "why": "a literary game"
      },
      {
        "relation": "is related to",
        "target": "palindromic sequence",
        "why": "the biological sense"
      }
    ],
    "identifiers": [
      {
        "scheme": "OEIS",
        "value_or_pattern": "A002113",
        "note": "palindromic numbers in base ten"
      }
    ],
    "standards_and_regulation": [
      "No regulation; conventions follow each field"
    ],
    "failure_modes_and_hazards": [
      "Inconsistent conventions on spaces and case",
      "Confusing the biological sense with the textual one",
      "Mistaking mirror symmetry of shapes for palindromes"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Detect, generate and explain palindromes in words, numbers and sequences.",
        "Explain palindromic sequences in DNA in general terms."
      ],
      "must_not": [
        "Treat a palindromic DNA sequence as the same as a word palindrome in analysis.",
        "Claim a phrase is a palindrome when spacing or punctuation rules have been changed without saying so.",
        "Present invented palindromes as historical or attributed to people who did not write them."
      ],
      "requires_human": [
        "Publishing a claim of a new record palindrome."
      ]
    },
    "ethics": {
      "considerations": [
        "Wordplay is cultural and creative work that deserves credit.",
        "Confused terms in genetics mislead learners."
      ],
      "affected_parties": [
        "Writers and puzzle makers",
        "Students"
      ]
    },
    "owners": {
      "steward": "Nobody owns the concept; authors own their published wordplay.",
      "master_systems": []
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q12321: palindrome",
      "url": "https://www.wikidata.org/wiki/Q12321",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Palindrome",
      "url": "https://en.wikipedia.org/wiki/Palindrome",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "define",
        "name": "Define",
        "description": "What a palindrome is.",
        "rationale": "Definition.",
        "layers": [
          {
            "id": "definition",
            "name": "Definition",
            "description": "Definition and conventions.",
            "findings": [
              {
                "id": "definition-finding",
                "name": "Definition",
                "description": "Definition.",
                "questions": [
                  {
                    "text": "What makes a sequence a palindrome, and what conventions apply in text, numbers and biology?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is the question about textual, numerical or biological palindromes?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "examples",
            "name": "Examples",
            "description": "Examples.",
            "findings": [
              {
                "id": "examples-finding",
                "name": "Examples",
                "description": "Examples.",
                "questions": [
                  {
                    "text": "What are standard examples in each kind?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits palindromic numbers?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "test",
        "name": "Test",
        "description": "Testing and generating.",
        "rationale": "Computation.",
        "layers": [
          {
            "id": "algorithm",
            "name": "Algorithm",
            "description": "Testing.",
            "findings": [
              {
                "id": "algorithm-finding",
                "name": "Algorithm",
                "description": "Algorithm.",
                "questions": [
                  {
                    "text": "How is a string or number tested for being a palindrome, and with what normalisation?",
                    "kind": "action"
                  },
                  {
                    "text": "What is the result for the input in question?",
                    "kind": "measurement"
                  }
                ]
              }
            ]
          },
          {
            "id": "generate",
            "name": "Generate",
            "description": "Generating and searching.",
            "findings": [
              {
                "id": "generate-finding",
                "name": "Generate",
                "description": "Generate.",
                "questions": [
                  {
                    "text": "How are palindromes generated or searched in text and number ranges?",
                    "kind": "action"
                  },
                  {
                    "text": "Which entry fits string algorithms?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "fields",
        "name": "Fields",
        "description": "Palindromes across fields.",
        "rationale": "Applications.",
        "layers": [
          {
            "id": "mathematics",
            "name": "Mathematics",
            "description": "Numbers.",
            "findings": [
              {
                "id": "mathematics-finding",
                "name": "Mathematics",
                "description": "Mathematics.",
                "questions": [
                  {
                    "text": "What is known about palindromic numbers and related problems such as the 196 problem?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "biology",
            "name": "Biology",
            "description": "DNA palindromes.",
            "findings": [
              {
                "id": "biology-finding",
                "name": "Biology",
                "description": "Biology.",
                "questions": [
                  {
                    "text": "What are palindromic sequences in DNA, and why do they matter for restriction enzymes?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits restriction sites?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "culture",
        "name": "Culture",
        "description": "Wordplay and history.",
        "rationale": "Culture.",
        "layers": [
          {
            "id": "wordplay",
            "name": "Wordplay",
            "description": "Literary palindromes.",
            "findings": [
              {
                "id": "wordplay-finding",
                "name": "Wordplay",
                "description": "Wordplay.",
                "questions": [
                  {
                    "text": "What famous palindromes exist in various languages, and how are they composed?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits constrained writing?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "history",
            "name": "History",
            "description": "History.",
            "findings": [
              {
                "id": "history-finding",
                "name": "History",
                "description": "History.",
                "questions": [
                  {
                    "text": "What is the history of palindromes from antiquity, such as the Sator square?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which misconceptions arise?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should palindromic numbers and DNA palindromes be separate entries?",
    "How should OEIS entries be linked?",
    "The registry entry has merged aliases for Mersenne and Cantor numbers, which are unrelated; should they be removed?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}