Some considerations on amoeba forcing notions

Some considerations on amoeba forcing notions
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关于阿米巴强迫观念的一些思考

DOI:
10.1007/s00153-014-0375-x
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发表时间:
2014
影响因子:
0.3
通讯作者:
Giorgio Laguzzi
Giorgio Laguzzi
中科院分区:
数学4区
文献类型:
--
作者:
Giorgio Laguzzi

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本文分析了树力变形虫的一些概念。特别地,我们引入了一种变形虫-银,并证明了它满足准纯决策而不满足纯决策。进一步定义了一个变形虫- sacks,并证明了它满足Laver性质。我们还展示了正则性的一些应用。最后,我们提出了变形虫的广义版本,并讨论了一些有趣的相关问题。
In this paper we analyse some notions of amoeba for tree forcings. In particular we introduce an amoeba-Silver and prove that it satisfies quasi pure decision but not pure decision. Further we define an amoeba-Sacks and prove that it satisfies the Laver property. We also show some application to regularity properties. We finally present a generalized version of amoeba and discuss some interesting associated questions.