Bounding by Canonical Functions, with CH
Bounding by Canonical Functions, with CH
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由规范函数限制,带有 CH
DOI:
10.1142/s021906130300025x
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
S. Shelah
中科院分区:
文献类型:
--
作者:
P. Larson;S. Shelah
We show that the members of a certain class of semi-proper iterations do not add countable sets of ordinals. As a result, starting from suitable large cardinals one can obtain a model in which the Continuum Hypothesis holds and every function from ω1 to ω1 is bounded on a club by a canonical function for an ordinal less than ω2.