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arXiv 1408.3699math.LO
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积分逻辑中的顺从性、极端顺从性、模型论稳定性和依赖性

Amenability, extreme amenability, model-theoretic stability, and dependence property in integral logic

Karim Khanaki

摘要:

本文共分三个部分。首先,我们利用积分逻辑的不变测度研究和刻画了顺从和极端顺从拓扑半群。本文证明了拓扑半群的一些性质的可定义性,如顺从性和不动点的不动点。其次,我们定义类型和发展的整体逻辑框架中的局部稳定性。对于稳定的公式$ϕ$,我们证明了模型上的所有完备$ϕ$ -型的可定义性,并由此导出稳定性的基本定理.第三,我们研究了测度论中的一个重要性质,Talagrand稳定性。指出了Talagrand稳定性与依赖性(NIP)之间的联系,并证明了NIP公式类型可定义性的测度论形式。

英文摘要:

This paper has three parts. First, we study and characterize amenable and extremely amenable topological semigroups in terms of invariant measures using integral logic. We prove definability of some properties of a topological semigroup such as amenability and the fixed point on compacta property. Second, we define types and develop local stability in the framework of integral logic. For a stable formula $ϕ$, we prove definability of all complete $ϕ$-types over models and deduce from this the fundamental theorem of stability. Third, we study an important property in measure theory, Talagrand's stability. We point out the connection between Talagrand's stability and dependence property (NIP), and prove a measure theoretic version of definability of types for NIP formulas.

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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