PROJECTIVELY WELL-ORDERED INNER MODELS

被引:35
作者
STEEL, JR
机构
[1] Department of Mathematics, University of California, Los Angeles
关键词
D O I
10.1016/0168-0072(94)00021-T
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We show that the reals in the minimal iterable inner model having n Woodin cardinals are precisely those which are Delta(n+2)(1) definable from some countable ordinal. (One direction here is due to Hugh Woodin.) It follows that this model satisfies ''There is a Delta(n+2)(1) well-order of the reals''. We also describe some other connections between the descriptive set theory of projective sets and inner models with finitely many Woodin cardinals.
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页码:77 / 104
页数:28
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