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arXiv 0906.2806math.LO
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NTP_2理论中的分叉

Forking in NTP_2 theories

Artem Chernikov, Itay Kaplan

摘要:

我们证明,在理论没有树的第二类属性(包括依赖和简单的理论)分叉和划分模型是相同的,事实上,在任何扩展基地。作为一个应用,我们证明了依赖等价于有界非分叉假设NTP_2。

英文摘要:

We prove that in theories without the tree property of the second kind (which include dependent and simple theories) forking and dividing over models are the same, and in fact over any extension base. As an application we show that dependence is equivalent to bounded non-forking assuming NTP_2.

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