Small sets in dense pairs

Small sets in dense pairs
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密集对中的小集合

DOI:
10.1007/s11856-019-1892-4
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发表时间:
--
影响因子:
1
通讯作者:
P. Eleftheriou
P. Eleftheriou
中科院分区:
数学2区
文献类型:
--
作者:
P. Eleftheriou

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设O-极小结构被稠密集P ∈ M扩张,使得三个驯服条件成立。我们证明了Pby上的诱导结构消除了非线性。作为推论,我们得到了每个小集合X可定义在可定义嵌入到一些Pl中,参数一致,解决了[8]中的一个问题。我们在三个例子中验证了驯服条件:真实的闭域的稠密对,由稠密独立集的扩张,和由具有Mann性质的稠密可分乘法群的扩张。沿着的道路,我们指出了Wencel [13]中对想象结果进行相关消除的证明中存在的差距。上述结果与最近的文献相反,因为它通常是已知的,并不消除mandaries,它也不是P上的诱导结构承认可定义的Skolem函数。
Letbe an expansion of an o-minimal structureby a dense setP⊆M, such that three tameness conditions hold. We prove that the induced structure onPbyeliminates imaginaries. As a corollary, we obtain that every small setXdefinable incan be definably embedded into somePl, uniformly in parameters, settling a question from [8]. We verify the tameness conditions in three examples: dense pairs of real closed fields, expansions of ℳ by a dense independent set, and expansions by a dense divisible multiplicative group with the Mann property. Along the way, we point out a gap in the proof of a relevant elimination of imaginaries result in Wencel [13]. The above results are in contrast to recent literature, as it is known in general thatdoes not eliminate imaginaries, and neither it nor the induced structure onPadmits definable Skolem functions.
NIP 理论指南
DOI: --
发表时间: 2012
期刊:
影响因子: --
作者:
Pierre Simon
通讯作者: Pierre Simon
具有最小开放核心的结构
DOI: 10.1090/s0002-9947-09-04908-3
发表时间: 2009
影响因子: 1.3
作者:
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通讯作者: C. Steinhorn
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
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通讯作者: Ayhan Günaydin
DOI: --
发表时间: 2013
影响因子: 0.3
作者:
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通讯作者: R. Wencel
DOI: --
发表时间: 2008
影响因子: 0.8
作者:
R. Wencel
通讯作者: R. Wencel