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arXiv 2103.12427math.LO
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关于非紧$p$ -adic可定义群

On non-compact $p$-adic definable groups

Will Johnson, Ningyuan Yao

摘要:

Peterzil和Steinhorn证明了,如果一个群$G$可定义在一个$o$ -极小结构中是不可定义紧的,那么$G$包含一个可定义的一维无挠子群。我们在这里证明了一个$p$ -adic模拟的Peterzil-Steinhorn定理,在特殊情况下的阿贝尔群。设$G$是可定义在$p$ -自闭域$M$中的阿贝尔群.如果$G$不是可定义紧的,则存在维数为1的可定义子群$H$不是可定义紧的。在未来的论文中,我们将推广到非阿贝尔$G$。

英文摘要:

Peterzil and Steinhorn proved that if a group $G$ definable in an $o$-minimal structure is not definably compact, then $G$ contains a definable torsion-free subgroup of dimension one. We prove here a $p$-adic analogue of the Peterzil-Steinhorn theorem, in the special case of abelian groups. Let $G$ be an abelian group definable in a $p$-adically closed field $M$. If $G$ is not definably compact then there is a definable subgroup $H$ of dimension one which is not definably compact. In a future paper we will generalize this to non-abelian $G$.

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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