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arXiv 1812.08271math.LO
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准闭指数域

Existentially Closed Exponential Fields

Levon Haykazyan, Jonathan Kirby

摘要:

本文讨论了指数场理论的存在闭模型。它们不构成一个基本类,但可以用实证逻辑来研究。我们找到了合并基,并在其上进行了类型划分。我们定义了一个独立的概念,并表明,独立的系统,更高的维度也可以合并。我们将分类理论中的一些概念推广到正逻辑中,并将存在闭指数域的范畴在稳定性层次中定位为NSOP $_1$而TP $_2$ .

英文摘要:

We characterise the existentially closed models of the theory of exponential fields. They do not form an elementary class, but can be studied using positive logic. We find the amalgamation bases and characterise the types over them. We define a notion of independence and show that independent systems of higher dimension can also be amalgamated. We extend some notions from classification theory to positive logic and position the category of existentially closed exponential fields in the stability hierarchy as NSOP$_1$ but TP$_2$.

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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