Fragments of Martin's maximum in generic extensions

Fragments of Martin's maximum in generic extensions
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DOI:
10.1002/malq.200410101
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发表时间:
2004-01-01
影响因子:
0.3
通讯作者:
Yoshinobu, Y
Yoshinobu, Y
中科院分区:
数学4区
文献类型:
--
作者:
König, B;Yoshinobu, Y

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我们证明了MM的大片段,例如树的性质和静止反射,被强(omega(1)+1)-博弈闭合强迫保持。PFA可以被强(omega(1)+1)游戏关闭强制摧毁,但不能被omega(2)关闭强制摧毁。(C)2004年Wiley-VCH Verlag GmbH&Co.KGaA。温海姆。
We show that large fragments of MM, e. g. the tree property and stationary reflection, are preserved by strongly (omega(1) + 1)-game-closed forcings. PFA can be destroyed by a strongly (omega(1) + 1)-game-closed forcing but not by an omega(2)-closed. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA. Weinheim.