Coding with ladders a well ordering of the reals
Coding with ladders a well ordering of the reals
复制标题
使用梯子编码对实数进行良好排序
DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
S. Shelah
中科院分区:
文献类型:
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作者:
U. Abraham;S. Shelah
Abstract Any model of ZFC + GCH has a generic extension (made with a poset of size ℵ2) in which the following hold: there exists a-well ordering of the reals, The proof consists in iterating posets designed to change at will the guessing properties of ladder systems on ω1. Therefore, the study of such ladders is a main concern of this article.