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第 23233 題:非確定有限自動機

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  1. 原題與已知條件
  2. 定義與適用範圍
  3. 逐步推導
  4. 逐步反向核對
  5. 結論
  6. 本題覆核與來源綁定

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← 逐題詳解目錄 · 原題批次

R0045-23233 · q-20261014-advance-20261111-r07-nondeterministic-finite-automaton-0083

原題與已知條件

transition=[from,input-or-null,to]且允許empty alphabet/final set的finite epsilon-NFA。操作=nfa-bounded-search-boundary;資料={"states":["s7","m7","f7","d7"],"alphabet":["a7","b7"],"start_state":"s7","final_states":["f7"],"transitions":[["s7",null,"m7"],["s7",null,"d7"],["m7","a7","m7"],["m7","b7","f7"]],"input":["a7","a7","a7","b7"],"max_steps":1}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。

  • G001 — transition=[from,input-or-null,to]且允許empty alphabet/final set的finite epsilon-NFA。操作=nfa-bounded-search-boundary;資料={"states":["s7","m7","f7","d7"],"alphabet":["a7","b7"],"start_state":"s7","final_states":["f7"],"transitions":[["s7",null,"m7"],["s7",null,"d7"],["m7","a7","m7"],["m7","b7","f7"]],"input":["a7","a7","a7","b7"],"max_steps":1}。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。

逐步推導

S001 · implies

操作前

source operation=nfa-bounded-search-boundary;original snapshot and mathematics retained

操作後

explicit ordered source output fields=[input, max_steps, found_accepting_path, rejection_claim, boundary]

條件:無

原題快照保留歷史介面;此處直接列來源欄序,不依賴JavaScript。tag與No保聲稱範圍,固定來源排序不冒充數學證明。

步驟識別與依賴

規則:source_ordered_interface_explicit_without_javascript · 依賴:G001

S002 · implies

操作前

ORIGINAL transition index=0;[from,input_or_null,to]=[s7, null, m7];state carrier=[s7, m7, f7, d7];alphabet=[a7, b7]

操作後

state endpoints legal;symbol either declared input or null EPS consuming0;ORIGINAL row position retained,including duplicate rows

條件:無

這是relation不是單值total函數,duplicate/多值/缺邊皆保原資料;null消耗0但不是一個alphabet字串。

步驟識別與依賴

規則:nfa_EVERY_original_relation_row_roles_empty_multi_EPS_legal · 依賴:G001, S001

S003 · implies

操作前

ORIGINAL transition index=1;[from,input_or_null,to]=[s7, null, d7];state carrier=[s7, m7, f7, d7];alphabet=[a7, b7]

操作後

state endpoints legal;symbol either declared input or null EPS consuming0;ORIGINAL row position retained,including duplicate rows

條件:無

這是relation不是單值total函數,duplicate/多值/缺邊皆保原資料;null消耗0但不是一個alphabet字串。

步驟識別與依賴

規則:nfa_EVERY_original_relation_row_roles_empty_multi_EPS_legal · 依賴:G001, S002

S004 · implies

操作前

ORIGINAL transition index=2;[from,input_or_null,to]=[m7, a7, m7];state carrier=[s7, m7, f7, d7];alphabet=[a7, b7]

操作後

state endpoints legal;symbol either declared input or null EPS consuming0;ORIGINAL row position retained,including duplicate rows

條件:無

這是relation不是單值total函數,duplicate/多值/缺邊皆保原資料;null消耗0但不是一個alphabet字串。

步驟識別與依賴

規則:nfa_EVERY_original_relation_row_roles_empty_multi_EPS_legal · 依賴:G001, S003

S005 · implies

操作前

ORIGINAL transition index=3;[from,input_or_null,to]=[m7, b7, f7];state carrier=[s7, m7, f7, d7];alphabet=[a7, b7]

操作後

state endpoints legal;symbol either declared input or null EPS consuming0;ORIGINAL row position retained,including duplicate rows

條件:無

這是relation不是單值total函數,duplicate/多值/缺邊皆保原資料;null消耗0但不是一個alphabet字串。

步驟識別與依賴

規則:nfa_EVERY_original_relation_row_roles_empty_multi_EPS_legal · 依賴:G001, S004

S006 · implies

操作前

ORIGINAL states=[s7, m7, f7, d7],alphabet=[a7, b7],start=s7,final_states=[f7];complete relation=[[s7, null, m7], [s7, null, d7], [m7, a7, m7], [m7, b7, f7]]

操作後

states nonempty with actual start;alphabet/final set/relation MAY be EMPTY;definition qualification does NOT prove determinism,totality,DFA equivalence or a successful run

條件:無

空final set合法且辨識空語言;空alphabet也合法。定義合格不保存在accepting path,亦不推deterministic或DFA等價。

步驟識別與依賴

規則:nfa_qualified_definition_EMPTY_alphabet_finals_edges_allowed · 依賴:G001, S005

S007 · implies

操作前

ORIGINAL input=[a7, a7, a7, b7];actual start configuration=[s7, 0];max_steps=1

操作後

depth0 accepted=否;one finite FULL-input final path suffices;dead alternatives do not veto success

條件:無

搜尋步數計transition,EPS雖不耗input仍占一步。起點final可接受空字;有一條完整有限成功路徑即足夠,不需所有分支成功。

步驟識別與依賴

規則:nfa_bounded_initial_and_finite_path_acceptance_scope · 依賴:G001, S006

S008 · implies

操作前

ORIGINAL depth=0;frontier in ORIGINAL-state/position display order=[[s7, 0]]

操作後

ALL [from,ORIGINAL transition index,next_or_null] rows=[[[s7, 0], 0, [m7, 0]], [[s7, 0], 1, [d7, 0]], [[s7, 0], 2, null], [[s7, 0], 3, null]];next distinct configs=[[m7, 0], [d7, 0]];hit FULL-input final=否

條件:無

逐全部config與原relation列驗一步,按深度去重;input位置依symbol或null只增1或0。有限EPS循環只增加可達路徑,不是一條無窮接受run。

步驟識別與依賴

規則:nfa_ALL_nondeterministic_bounded_frontier_not_infinite_cycle · 依賴:G001, S007

S009 · implies

操作前

ORIGINAL bound=1;input=[a7, a7, a7, b7];found_accepting_path=否

操作後

rejection_claim fixed No;bounded flag alone supplies no GENERAL rejection certificate;any actual completeness argument must be established separately

條件:無

最後No保留不由有限測試作一般拒絕推論,不否定found=True。某有限模型若另證此界已完整涵蓋configuration,可另判實際拒絕;不能把不同的完整判定偷換成本題found旗標。

步驟識別與依賴

規則:nfa_bounded_No_rejection_claim_not_found_negation · 依賴:G001, S008

逐步反向核對

  • S009 · 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。
  • S008 · 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。
  • S007 · 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。
  • S006 · 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。
  • S005 · 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。
  • S004 · 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。
  • 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

([a7, a7, a7, b7], 1, 否, 否, bounded_search_failure_cannot_prove_rejection_and_epsilon_cycles_are_not_infinite_accepting_runs)

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: b3f8e10003e7a534d2fbb4e976d66a2ebdc3d7261f12ee62dd4e69e39b7582ad
  • candidate record SHA-256: 10b5cdd2e70ffddf7104e5221d4e899e7737b89da6792e1988420040923a761b
  • semantic review receipt SHA-256: 357d7ad7a6726b2a757558d3b9586a408ade06526cc023da093719c292704438
  • question-first witness SHA-256: 99cefe17e98c7a74321801cf72df6d02fc95b6a6b78aa335accb7e11ed467b2a
  • Lean: NOT_RUN · human review: NOT_PERFORMED
同源完整 JSON