S001 · implies
操作前
boundary mode=zero_terms; scale=10
操作後
check the precise hypothesis that fails
條件:無
先說明失敗的是哪個假設,不把所有失敗情形都判成發散。
步驟識別與依賴
規則:ratio_hypothesis_audit · 依賴:G001
P1000-0759 · q-20261015-advance-20261117-r02-ratio-test-series-0084
eventually nonzero、absolute successive ratio與limit存在責任。操作=ratio-test-boundary;資料={"mode":"zero_terms","scale":10}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。
G001 — eventually nonzero、absolute successive ratio與limit存在責任。操作=ratio-test-boundary;資料={"mode":"zero_terms","scale":10}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。比值判別需要最終非零尾端、絕對值比值與真正存在的極限;邊界題指出失敗的假設,不判定級數本身。
操作前
boundary mode=zero_terms; scale=10
操作後
check the precise hypothesis that fails
條件:無
先說明失敗的是哪個假設,不把所有失敗情形都判成發散。
規則:ratio_hypothesis_audit · 依賴:G001
操作前
a_n=10 for odd n; a_n=0 for even n
操作後
infinitely many denominators a_n are0
條件:無
任意遠處仍有偶數索引,故沒有最終非零尾端。
規則:zero_denominators · 依賴:G001, S001
操作前
successive quotient at an even index
操作後
division by0: ratio undefined
條件:無
比值未定義不能當作比值0,也不能把不存在的極限標為0。
規則:ratio_not_defined · 依賴:G001, S002
操作前
missing or misused premise
操作後
this attempted test is not licensed
條件:無
保留原題邊界標記,不偷加未證的一般收斂結論。
規則:boundary_verdict · 依賴:G001, S003
S004 · premise_and_result_audit — 有限核對不證無限尾端;本步的量詞、非零分母與絕對值條件仍須保留。S003 · premise_and_result_audit — 有限核對不證無限尾端;本步的量詞、非零分母與絕對值條件仍須保留。S002 · premise_and_result_audit — 有限核對不證無限尾端;本步的量詞、非零分母與絕對值條件仍須保留。S001 · premise_and_result_audit — 有限核對不證無限尾端;本步的量詞、非零分母與絕對值條件仍須保留。(zero_terms, 10, a_n=10_for_odd_n_and_0_for_even_n, successive_ratio_has_zero_denominators_infinitely_often, 否)
上述完整代值與條件核對得到原題答案;欄位次序及真假標記保持原始合約。
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。
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