# 第 23918 題：NFA到DFA的子集合構造 [返回所在分頁 120](https://ocme.evemisslab.com/zh-Hant/questions/page/120/) [← 逐題詳解目錄](https://ocme.evemisslab.com/zh-Hant/questions/) · [原題批次](https://ocme.evemisslab.com/zh-Hant/practice/batch-20261014-advance-20261112-r07-subset-construction-nfa-to-dfa-foundations/#q-20261014-advance-20261112-r07-subset-construction-nfa-to-dfa-0068) 本頁是已完成第二對話 AI 數理與中英語義覆核的教學詳解，只支持本題明示的模型與前提。沒有人工審查或新 Lean 證明，也不提升原題或 MKO 的 Canonical 真值狀態。 R0046-23918 · q-20261014-advance-20261112-r07-subset-construction-nfa-to-dfa-0068 ## 原題與已知條件 epsilon-closed start、move後closure與accepting-subset交集規則。操作=subsetdfa-accepting-subset；資料={"states":["s17","m17","f17","e117","e217","d17"],"alphabet":["a17","b17"],"start_state":"s17","final_states":["f17"],"transitions":[["s17",null,"m17"],["s17",null,"d17"],["m17","a17","m17"],["m17","b17","f17"],["f17",null,"e117"],["e117",null,"e217"]],"subset":["m17","d17"]}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。 - G001 — epsilon-closed start、move後closure與accepting-subset交集規則。操作=subsetdfa-accepting-subset；資料={"states":["s17","m17","f17","e117","e217","d17"],"alphabet":["a17","b17"],"start_state":"s17","final_states":["f17"],"transitions":[["s17",null,"m17"],["s17",null,"d17"],["m17","a17","m17"],["m17","b17","f17"],["f17",null,"e117"],["e117",null,"e217"]],"subset":["m17","d17"]}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。 ## 定義與適用範圍 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。 - [mko-subset-construction-nfa-to-dfa](https://ocme.evemisslab.com/zh-Hant/mko/mko-subset-construction-nfa-to-dfa/) ## 逐步推導 S001 · implies操作前 source operation=subsetdfa-accepting-subset;original snapshot and mathematics retained 操作後 explicit ordered source output fields=[subset, NFA_final_states, intersection, accepting_subset, certificate] 條件：無 保留原題介面快照，本頁直接列來源欄序，不需JavaScript。radius由原mode選6／11欄，不補欄；No與實際否定依來源責任分清。 步驟識別與依賴規則：source_ordered_interface_explicit_without_javascript · 依賴：G001 S002 · implies操作前 ORIGINAL states=[s17, m17, f17, e117, e217, d17],alphabet=[a17, b17],start=s17;ORIGINAL transition order=[[s17, null, m17], [s17, null, d17], [m17, a17, m17], [m17, b17, f17], [f17, null, e117], [e117, null, e217]] 操作後 final set normalized UTF16=[f17];states nonempty,alphabet/finals/relation MAYEMPTY;DUPLICATE triples rejected in THIS model 條件：無 此題與前一NFA節點不同：transition triple須唯一，finals須排序。所有subset都是真carrier子集合；不偷用舊wrapper的duplicate／final-order慣例。 步驟識別與依賴規則：subsetdfa_qualified_NFA_signature_DUPLICATE_edges_REJECTED_here · 依賴：G001, S001 S003 · implies操作前 EXACT ORIGINAL supplied S=[d17, m17];normalized SAME-machine final set=[f17] 操作後 actual intersection=[];accepting_subset=否;NO EPS closure inserted 條件：無 這是DFA接受subset的定義，不改為從任意未closed S出發的NFA空字接受判定；empty subset是合法rejecting dead state。 步驟識別與依賴規則：subsetdfa_EXACT_given_subset_final_intersection_NO_hidden_closure · 依賴：G001, S002 ## 逐步反向核對 - S003 · premise_and_result_audit — 回到原始資料與本步條件核對，不把單向推論誤稱等價。 - S002 · premise_and_result_audit — 回到原始資料與本步條件核對，不把單向推論誤稱等價。 - S001 · premise_and_result_audit — 回到原始資料與本步條件核對，不把單向推論誤稱等價。 ## 結論 ([d17, m17], [f17], [], 否, DFA_subset_accepts_exactly_when_it_intersects_the_NFA_final_set) 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。 ## 本題覆核與來源綁定 覆核日期：2026-10-26 原題、答案、步驟表達式、數值 AST 與既有歷史保持原樣；原來的候選狀態屬於來源歷史，不覆寫為形式化證明。 來源雜湊與覆核憑證 - input commit: 0f7be61e2c22317a4075561dc822c87d881a50db - original question SHA-256: 057979f72f9e879e5bcff49573e9e39ed8d658ad0b6aef13f32f906d5ad6b78a - candidate record SHA-256: 9e6b1ec3549ffe27cc35a7c0698e7899d7e9ac2932f0b309dfeef6b505a89033 - semantic review receipt SHA-256: a7c0d888ade6d307703c4222c4137c78c0d2448babdcba2fa3446fe6fdd343c1 - question-first witness SHA-256: c9571f97a37d503ad6a61034cc00108543a05c37ef246d1c4962f55136a3de02 - Lean: NOT_RUN · human review: NOT_PERFORMED [同源完整 JSON](https://ocme.evemisslab.com/data/question-derivations/questions/q-20261014-advance-20261112-r07-subset-construction-nfa-to-dfa-0068.json)