Proper forcing and $L({mathbb R})$

Proper forcing and $L({mathbb R})$
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适当的强制和$L({mathbb R})$

DOI:
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发表时间:
2000
期刊:
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通讯作者:
J. Zapletal
J. Zapletal
中科院分区:
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文献类型:
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作者:
I. Neeman;J. Zapletal

文献摘要

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假设存在大基数,我们给出模型$L({mathbb R})$正则化的两种方式。我们证明了这种具有{em序数}参数的模式的理论不能被小的强迫改变;进一步证明了$V$中的一组序数不能通过小强迫加到$L({mathbb R})$中。所需的大基数对应于$AD^{L({mathbb R})}$的一致性强度;大约$omega$ Woodin枢机。
We present two ways in which the model $L({mathbb R})$ is canonical assuming the existence of large cardinals. We show that the theory of this model, with {em ordinal} parameters, cannot be changed by small forcing; we show further that a set of ordinals in $V$ cannot be added to $L({mathbb R})$ by small forcing. The large cardinal needed corresponds to the consistency strength of $AD^{L({mathbb R})}$; roughly $omega$ Woodin cardinals.