更多的最小的非分散的线性顺序
1Department of Mathematics, Bar-Ilan University, Ramat-Gan, 52900 Israel.
概括
这项研究在哥德尔内部的新枢机度上构建了最小的非散射线性顺序.
科学领域:
- 集合理论 集合理论
- 数学的逻辑数学逻辑
背景情况:
- 坎明斯,艾斯沃思和摩尔以前的工作引入了任意继任者大小的最小非分散的线性顺序.
- 其他枢机院是否存在这样的命令仍然是一个悬而未决的问题.
- 回答Baumgartner的问题,之前的研究构建了一个最小的Aronszajn线,而不是Souslin.
研究的目的:
- 调查在正规无数红衣主教的最小非分散线性顺序的存在.
- 为这些订单提供统一的施工方法.
- 探索布罗茨基-里诺特代理原则与这些构造之间的关系.
主要方法:
- 在哥德尔可构造的宇宙 (V = L) 中的构造.
- 使用布罗德斯基-里诺特代理原则.
- 证明构造订单的对式非嵌入性.
主要成果:
- 最小的非分散的线性顺序存在于任何正则的不可数的枢纽,它在戈德尔可构造的宇宙中不是微弱紧的.
- 对于这样的枢机来说,可以构建无限多的对式非嵌入式顺序.
- 布罗德斯基-里诺特代理原则被证明是严格弱于在以前的水平构造中使用的原则.
结论:
- 在更广泛的枢密度范围内确立了最小的非分散线性顺序的存在.
- 这些发现扩展了集合理论和线性顺序理论中以前的结果.
- 该研究提供了一种基于较弱代理原则的新统一施工技术.
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