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arXiv 1807.01951math.GRmath.DS
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什么时候群移位是有限型的?

When are group shifts of finite type?

Ville Salo

摘要:

已知多环群上的群移位必然是有限型的。我们证明了,由于一些微不足道的原因,如果一个群不满足子群的极大条件,那么它允许非SFT阿贝尔群移位。特别地,我们证明了如果群是初等顺从的或满足Tits择一性,则它是实多环的当且仅当它的群移位是有限型的。我们的定理是Schmidt和Osin的结果的小的阐述。

英文摘要:

It is known that a group shift on a polycyclic group is necessarily of finite type. We show that, for trivial reasons, if a group does not satisfy the maximal condition on subgroups, then it admits non-SFT abelian group shifts. In particular, we show that if group is elementarily amenable or satisfies the Tits alternative, then it is virtually polycyclic if and only if all its group shifts are of finite type. Our theorems are minor elaborations of results of Schmidt and Osin.

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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