{"schema_version":"ocme-site-results-v1","locale":"en","page_type":"derivations","facts":{"questions":36000,"reviewed":36000,"display_candidates":0,"knowledge":302,"guides":299,"paths":59,"batches":360,"families":1441,"atlas":302,"core":80,"evidence":9,"formal_evidence":5,"formal_subjects":4,"lean_files":6,"lean_toolchain":"leanprover/lean4:v4.30.0","question_state":"candidate","english_state":"ai_candidate","question_Lean":"NOT_RUN","canonical_truth_promotion":false},"filters":{"q":"mko-iid-sequence"},"kind":"guides","total":1,"pages":1,"page":1,"entries":[{"id":"derivation-mko-iid-sequence-01","title":{"zh-Hant":"獨立同分布序列：由 Bernoulli(1/3) 柱集乘積公式證明 IID","en":"IID sequence: proving IID from the Bernoulli(1/3) cylinder product formula"},"summary":{"zh-Hant":"設 p=1/3，柱集證書規定每個有限 0-1 word w（長度 n、含 k 個 1）的機率為 p^k(1−p)^{n−k}。證明：此族一致且每層總和為 1；由此（配合引用的 Kolmogorov 存在定理）得到 {0,1}^ℕ 上的機率；每個 X_i 的完整邊際都是 Bernoulli(1/3)；每個有限子族都獨立。再以三個對照說明：檢查過的 prefix、pairwise 獨立與相同期望都不足以宣稱無限 IID。","en":"Let p=1/3, and let the cylinder certificate give each finite binary word w (length n, with k ones) the probability p^k(1−p)^{n−k}. Prove that this family is consistent with total mass 1 at every level; obtain from it (with the cited Kolmogorov existence theorem) a probability on {0,1}^ℕ; show that every X_i has the complete marginal Bernoulli(1/3) and that every finite subfamily is independent. Then use three contrasts to show that a checked prefix, pairwise independence and equal expectations are each insufficient for an infinite IID claim."},"mko_ids":["mko-iid-sequence"]}],"title":"Concept derivation guides"}