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arXiv 2609.15376math.LOmath.ACmath.NT

AKE原理在粗略深度分歧的Hensel赋值域中

AKE principles in roughly deeply ramified henselian valued fields

Franziska Jahnke, Margarete Ketelsen, Floris Vermeulen

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中文总结 AI 辅助

本文证明混合特征Hensel赋值域的存在性理论可由值群和剩余环理论决定,并得到相对量词消去结果。

中文摘要 AI 辅助

我们证明,对于任何混合特征$(0,p)$的Hensel赋值域,其(存在性)$\mathcal{L}_{\mathrm{val}}$-理论由值群在$\mathcal{L}_{\mathrm{oag}}$中带常数$v(p)$的(存在性)理论以及剩余环$\mathcal{O}_v/(p)$在环语言扩张$\mathcal{L}_{\mathrm{Witt}}$中的(存在性)理论所决定,前提是$\mathcal{O}_v/(p)$是半完美的。我们还证明,$\mathcal{O}_v/(p)$上的$\mathcal{L}_{\mathrm{Witt}}$-结构是使用常数的$\mathcal{L}_{\mathrm{ring}}$-可定义的,并且这正是由环境赋值域在$\mathcal{O}_v/(p)$上诱导的结构。作为推论,我们在合适的语言中获得了粗略深度分歧的混合特征$(0,p)$ Hensel赋值域理论的相对量词消去结果(消去$K$-量词)。

英文摘要

We show that for any henselian valued field of mixed characteristic $(0,p)$, the (existential) $\mathcal{L}_{\mathrm{val}}$-theory of the valued field is determined by the (existential) theory of the value group in $\mathcal{L}_{\mathrm{oag}}$ with a constant for $v(p)$ and the (existential) theory of the residue ring $\mathcal{O}_v/(p)$ in an expansion $\mathcal{L}_{\mathrm{Witt}}$ of the language of rings, provided $\mathcal{O}_v/(p)$ is semi perfect. We moreover show that the $\mathcal{L}_{\mathrm{Witt}}$-structure on $\mathcal{O}_v/(p)$ is $\mathcal{L}_{\mathrm{ring}}$-definable using constants, and that this is exactly the structure induced on $\mathcal{O}_v/(p)$ by the ambient valued field. As a consequence, we obtain a relative quantifier elimination result (eliminating $K$-quantifiers) in a suitable language for the theory of roughly deeply ramified henselian valued fields of mixed characteristic $(0,p)$.

发表机构

  • University of Münster(明斯特大学)
  • Max Planck Institute for Mathematics(马克斯·普朗克数学研究所)

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