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arXiv 1102.2494math.LO
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O-极小结构中可定义阿贝尔群的拓扑

Topology of definable abelian groups in o-minimal structures

Elias Baro, Alessandro Berarducci

摘要:

本文证明了维数不为4的实封闭的域的o-极小展开式中的每一个可定义连通的可定义紧的阿贝尔可定义群可定义同胚于同维数的环面。此外,在半代数的情况下,结果对所有维度都成立。

英文摘要:

In this note we show that every definably connected, definably compact abelian definable group in an o-minimal expansion of a real closed field of dimension not 4 is definably homeomorphic to a torus of the same dimension. Moreover, in the semialgebraic case the result holds for all dimensions.

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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