笨拙处理
发表于 2025-3-25 04:56:13
Set Theory, Requirements, Witnesses,This is a very brief introduction to infinite cardinals. Our main interest here is in “requirements” and in “witnesses,” which are key concepts throughout this book.
愤慨点吧
发表于 2025-3-25 09:35:51
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串通
发表于 2025-3-25 12:51:39
Priorities (A Splitting Theorem),A simple priority argument is motivated and presented.
跳动
发表于 2025-3-25 19:45:24
Reductions, Comparability (Kleene-Post Theorem),Oracle Turing machines and Turing reductions are defined and discussed.
褪色
发表于 2025-3-25 23:09:28
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MODE
发表于 2025-3-26 01:03:56
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ANN
发表于 2025-3-26 07:11:07
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UTTER
发表于 2025-3-26 09:17:20
,Length of Agreement (Sacks Splitting Theorem),Suppose that we are given a c.e.n. set ., and we wish to construct a c.e.n. set . having certain properties, including .. The length of agreement method, introduced here, is a way to do this.
上流社会
发表于 2025-3-26 14:17:02
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Limpid
发表于 2025-3-26 18:27:34
,A Tree of Guesses (Weak Thickness Lemma),The priority tree, which we call a “tree of guesses,” is introduced, and used for a construction involving infinite injury. The associated concept of “.-believability” is employed.