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arXiv 2107.02577math.LO
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平稳逻辑的强向下Löwenheim-Skolem定理,III --混合支撑迭代

Strong downward Löwenheim-Skolem theorems for stationary logics, III -- mixed support iteration

Sakaé Fuchino, André Ottenbreit Maschio Rodrigue, Hiroshi Sakai

摘要:

继续[Fuchino,Ottenbreit and Sakai[9,10]]和[Fuchino and Ottenbreit[11]],我们进一步研究了与平稳逻辑的Löwenheim-Skolem定理有关的反射原理。本文主要分析了在一个超紧长度的混合支集迭代中,通过坍缩另一个超紧基数得到$(2^{\aleph_0})^+$的情形。我们证明了,除其他事项外,具有小特征的拓扑空间的不可度量化的下至$< 2^{\aleph_0}$的反射与[Fuchino,Ottenbreit和Sakai[9,10]]和[Fuchino和Ottenbreit[11]]中研究的反射性质无关。

英文摘要:

Continuing [Fuchino, Ottenbreit and Sakai[9, 10]] and [Fuchino and Ottenbreit[11]], we further study reflection principles in connection with the Löwenheim-Skolem Theorems of stationary logics. In this paper, we mainly analyze the situations in the models obtained by mixed support iteration of a supercompact length and then collapsing another supercompact cardinal to make it $(2^{\aleph_0})^+$. We show, among other things, that the reflection down to $< 2^{\aleph_0}$ of the non-metrizability of topological spaces with small character is independent from the reflection properties studied in [Fuchino, Ottenbreit and Sakai[9, 10]] and [Fuchino and Ottenbreit[11]].

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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