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arXiv 2403.09018math.LO
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$\omega_1$-保持力迫的迭代定理

An Iteration Theorem for $ω_1$-preserving Forcings

Andreas Lietz

AI总结:

本文证明了一个迭代定理:对于一类良好的$\omega_1$-保持力迫迭代,若在后继步骤力迫SRP并保持旧静态集,则$\omega_1$不坍缩,但需大基数作为代价。

摘要:

我们证明了一个迭代定理,该定理保证对于一大类良好的$\omega_1$-保持力迫的迭代,$\omega_1$不会被坍缩,代价是需要大基数作为燃料。更精确地说,我们证明了一个$\omega_1$-保持力迫的良好迭代,若在后继步骤力迫SRP并保持旧的静态集,则不会坍缩$\omega_1$。

英文摘要:

We prove an iteration theorem which guarantees for a wide class of nice iterations of $ω_1$-preserving forcings that $ω_1$ is not collapse, at the price of needing large cardinals to burn as fuel. More precisely, we show that a nice iteration of $ω_1$-preserving forcings which force SRP at successor steps and preserves old stationary sets does not collapse $ω_1$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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