{
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  "question_id": "q-20261014-advance-20261108-r02-monotone-sequence-convergence-theorem-0076",
  "pilot_number": "R0041-21051",
  "number": 21051,
  "family_id": "qf-mod39-monoseq-hypothesis-boundary",
  "title": {
    "zh-Hant": "第 21051 題：單調有界數列收斂定理",
    "en": "Question 21051: Missing Premise Certificates Are Not Negated Properties of an Unknown Continuation"
  },
  "original_question": {
    "schema_version": "ocme-question-v0.1",
    "id": "q-20261014-advance-20261108-r02-monotone-sequence-convergence-theorem-0076",
    "batch_id": "batch-20261014-advance-20261108-r02-monotone-sequence-convergence-theorem-foundations",
    "language": "zh-Hant",
    "source_mko_ids": [
      "mko-monotone-sequence-convergence-theorem"
    ],
    "title_zh": "單調有界數列收斂定理",
    "stem_zh": "實數列的symbolic全稱單調與相應有界證書。操作=monoseq-hypothesis-boundary；資料={\"mode\":\"monotone_unbounded\",\"prefix_length\":3}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。",
    "answer": {
      "kind": "expression",
      "value": "(monotone_unbounded, [0, 1, 2], 是, 否, 否, monotone_without_bound_not_covered)",
      "explanation_zh": "Wave6第二層核對=(monotone_unbounded, [0, 1, 2], 是, 否, 否, monotone_without_bound_not_covered)；依完整明示資料獨立重算；nondecreasing加上界時極限為sup，nonincreasing加下界時為inf；sup不必是maximum；epsilon證明以s-epsilon不是上界取得index再由monotonicity控制tail；finite prefix不足且convergence不推monotone。"
    },
    "difficulty": {
      "band": "undergraduate_core",
      "level": 1,
      "skills": [
        "單調有界數列收斂定理"
      ]
    },
    "variant": {
      "family_id": "qf-mod39-monoseq-hypothesis-boundary",
      "seed": 202611082076,
      "parameters": {
        "mode": "monotone_unbounded",
        "prefix_length": 3,
        "domain": "Symbolic_monotone_bounded_real_sequence",
        "operation": "monoseq-hypothesis-boundary",
        "semantic_template": "qf-mod39-monoseq-hypothesis-boundary/{\"mode\":\"monotone_unbounded\",\"prefix_length\":3}"
      }
    },
    "verification": {
      "status": "candidate",
      "checks": [
        "producer_exact_finite_or_symbolic_model",
        "producer_source_snapshot_check",
        "producer_substantive_template_deduplication",
        "producer_json_schema"
      ],
      "warning_zh": "候選須主端重算；不構成人工審定、single-step orbit、finite-prefix monotonicity、ambient-relative topology混同、Chebyshev equality、pairwise-only容斥、無Euclid-lemma uniqueness、loopful digraph、Lean或Evidence。"
    },
    "provenance": {
      "generator_role": "question_producer",
      "generator_model": "model_unknown",
      "generated_at": "2026-10-14",
      "contract_version": "ocme-question-factory-v0.1"
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  "original_english_edition": {
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    "question_id": "q-20261014-advance-20261108-r02-monotone-sequence-convergence-theorem-0076",
    "batch_id": "batch-20261014-advance-20261108-r02-monotone-sequence-convergence-theorem-foundations",
    "locale": "en",
    "translation_state": "ai_candidate",
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      "family_id": "qf-mod39-monoseq-hypothesis-boundary",
      "seed": 202611082076,
      "semantic_template": "qf-mod39-monoseq-hypothesis-boundary/{\"mode\":\"monotone_unbounded\",\"prefix_length\":3}"
    },
    "fields": {
      "title": "Missing Premise Certificates Are Not Negated Properties of an Unknown Continuation",
      "stem": "Boundary mode=monotone_unbounded, displayed prefix_length=3. For monotone_unbounded the declared full example is a_n=n; for bounded_nonmonotone it is a_n=(−1)^n, both on n≥0. finite_prefix_only supplies only a length, not a whole sequence. Give (mode, prefix_or_length, monotone_premise_certified, relevant_bound_certified, theorem_applicability_certified, boundary).",
      "answer": {
        "kind": "expression",
        "value": "(monotone_unbounded, [0, 1, 2], Yes, No, No, monotone_without_bound_not_covered)",
        "explanation": "Keep monotonicity, the relevant bound and applicability of the monotone-bounded theorem separate. In finite-prefix mode the No values withhold universal certificates, not classify an unspecified continuation. Bounded nonmonotone sequences may have other convergence arguments; the displayed alternating example does not meet this theorem. The exact result, retaining the requested order, is (monotone_unbounded, [0, 1, 2], Yes, No, No, monotone_without_bound_not_covered)."
      },
      "skills": [
        "Missing Premise Certificates Are Not Negated Properties of an Unknown Continuation"
      ],
      "verification_warning": "This is a candidate exercise. Mechanical recomputation checks only the stated conditions and this instance; it is neither a formal proof nor human review."
    }
  },
  "givens": [
    {
      "id": "G001",
      "text": {
        "zh-Hant": "實數列的symbolic全稱單調與相應有界證書。操作=monoseq-hypothesis-boundary；資料={\"mode\":\"monotone_unbounded\",\"prefix_length\":3}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。",
        "en": "Boundary mode=monotone_unbounded, displayed prefix_length=3. For monotone_unbounded the declared full example is a_n=n; for bounded_nonmonotone it is a_n=(−1)^n, both on n≥0. finite_prefix_only supplies only a length, not a whole sequence. Give (mode, prefix_or_length, monotone_premise_certified, relevant_bound_certified, theorem_applicability_certified, boundary)."
      }
    }
  ],
  "steps": [
    {
      "id": "S001",
      "uses": [
        "G001"
      ],
      "before": "source operation=monoseq-hypothesis-boundary;original snapshot and mathematics retained",
      "after": "explicit ordered source output fields=[mode, prefix_or_length, monotone_premise_certified, relevant_bound_certified, theorem_applicability_certified, boundary]",
      "relation": "implies",
      "rule_id": "source_ordered_interface_explicit_without_javascript",
      "conditions": [],
      "explanation": {
        "zh-Hant": "原題歷史介面標記保留；此處直接列有序輸出欄位，不依賴JavaScript。欄位或tag不是額外數學證據，固定No保留原聲稱範圍。",
        "en": "Retain the historical interface marker while listing ordered output fields without JavaScript.Fields and tags are not extra mathematical evidence;fixed No markers retain their claim scope."
      },
      "reverse_audit": {
        "kind": "premise_and_result_audit",
        "explanation": {
          "zh-Hant": "回到原始資料與本步條件核對，不把單向推論誤稱等價。",
          "en": "Check against the original data and this step's premises; a one-way implication is not an equivalence."
        }
      },
      "arithmetic": null
    },
    {
      "id": "S002",
      "uses": [
        "G001",
        "S001"
      ],
      "before": "ORIGINAL mode=monotone_unbounded;displayed prefix length=3;prefix_or_length=[0, 1, 2]",
      "after": "declared WHOLE a_n=n:adjacent difference1>0;for ANY real bound B choose natural n>B,so not bounded above and not a finite-limit sequence",
      "relation": "implies",
      "rule_id": "monoseq_boundary_whole_law_not_observed_prefix",
      "conditions": [],
      "explanation": {
        "zh-Hant": "先分清給的是全數列公式還是只給有限長度。前兩種的單調／有界／不收斂理由是全稱公式與明示反例，不由顯示的頭幾項推斷。",
        "en": "Distinguish a whole-sequence formula from a finite length.In the first two cases,monotonicity,bounds and divergence follow from the declared infinite law and explicit witnesses,not the displayed prefix."
      },
      "reverse_audit": {
        "kind": "premise_and_result_audit",
        "explanation": {
          "zh-Hant": "回到原始資料與本步條件核對，不把單向推論誤稱等價。",
          "en": "Check against the original data and this step's premises; a one-way implication is not an equivalence."
        }
      },
      "arithmetic": null
    },
    {
      "id": "S003",
      "uses": [
        "G001",
        "S002"
      ],
      "before": "ORIGINAL boundary mode=monotone_unbounded;actual certificate flags=(是, 否, 否)",
      "after": "monotone convergence theorem not certified here;convergence in GENERAL does NOT imply monotonicity;unknown continuation not declared divergent",
      "relation": "implies",
      "rule_id": "monoseq_hypotheses_sufficient_not_convergence_necessity",
      "conditions": [],
      "explanation": {
        "zh-Hant": "單調有界是此定理的充分條件，不是所有收斂數列的必要條件。有限前綴的No不宣稱任何延伸都發散；bounded_nonmonotone這個指定交錯例的發散有自己的奇偶子序列證據。",
        "en": "Monotonicity and the matching bound are sufficient for this theorem,not necessary for every convergent sequence.A finite-prefix No does not make all extensions divergent;the specified alternating example has its own even/odd divergence witness."
      },
      "reverse_audit": {
        "kind": "premise_and_result_audit",
        "explanation": {
          "zh-Hant": "回到原始資料與本步條件核對，不把單向推論誤稱等價。",
          "en": "Check against the original data and this step's premises; a one-way implication is not an equivalence."
        }
      },
      "arithmetic": null
    }
  ],
  "math_model": {
    "result": [
      "monotone_unbounded",
      [
        0,
        1,
        2
      ],
      true,
      false,
      false,
      "monotone_without_bound_not_covered"
    ]
  },
  "conclusion": {
    "canonical_value": "(monotone_unbounded, [0, 1, 2], 是, 否, 否, monotone_without_bound_not_covered)",
    "explanation": {
      "zh-Hant": "依上列完整代值及條件核對得到原題答案；原題編號、格式與狀態保持不變。",
      "en": "The full substitutions and premise checks give the original answer; source identity,format and status are unchanged."
    }
  },
  "definition_note": {
    "zh-Hant": "沿用原題明示的論域、假設與來源 MKO 定義。本題已完成第二對話數理與中英語義覆核，並由原始參數逐題獨立重算模型、答案與每個算術步驟；原題仍為 candidate。",
    "en": "Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate."
  },
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