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arXiv 1402.4787math.LO
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O-极小域中可定义集的度量

Measuring definable sets in o-minimal fields

Jana Maříková, Masahiro Shiota

摘要:

本文在O-极小域$R$的卡方幂的有限部分所包含的可定义集上引入了一个非实值测度。该测度取有序半环中的值,即$R$的商的戴德金完备化。证明了$R^n$的每一个非空内部的可测子集都有正测度,并且该测度由Jacobian行列式等于$\pm 1$的可定义$C^1$ -同态保持.

英文摘要:

We introduce a non real-valued measure on the definable sets contained in the finite part of a cartesian power of an o-minimal field $R$. The measure takes values in an ordered semiring, the Dedekind completion of a quotient of $R$. We show that every measurable subset of $R^n$ with non-empty interior has positive measure, and that the measure is preserved by definable $C^1$-diffeomorphisms with Jacobian determinant equal to $\pm 1$.

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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