The Covering Lemma
The Covering Lemma
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覆盖引理
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
W. Mitchell
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文献类型：
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作者：
W. Mitchell
1974 年，罗纳德·詹森 (Ronald Jensen) 的一组手写笔记改变了我们对内部模型的理解，其标题朴素“关于银定理的旁注”。在覆盖引理之前，哥德尔的可构造集合 L 类是一个集合论模型，人们对它知之甚多，但与宇宙联系甚少；有了覆盖引理，在没有大基数的情况下，它是宇宙的支撑骨架。
Our understanding of inner models was transformed in 1974 by as set of handwritten notes of Ronald Jensen with the modest title “Marginalia on a Theorem of Silver”. Before the covering lemma, Godel’s class L of constructible sets was a model of set theory of which much was know, but which had little connection with the universe; with the covering lemma it is, in the absence of large cardinals, the supporting skeleton of the universe.