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arXiv math/0605729math.DS
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一般的$C^1$映射没有absolutely continuous不变的概率测度

A generic $C^1$ map has no absolutely continuous invariant probability measure

Artur Avila, Jairo Bochi

摘要:

设$M$是任意维数$d \ge 1$的光滑紧致流形(可能有边界,也可能不连通).我们考虑$C^1$映射的集合$f:M\to M$没有绝对连续的(关于Lebesgue)不变的概率测度。我们证明了这是一个剩余的(稠密的$G_δ) set in the $ C^1$拓扑.在证明过程中,我们需要将通常的Rokhlin塔引理推广到非不变测度。这一结果可能是独立的利益。

英文摘要:

Let $M$ be a smooth compact manifold (maybe with boundary, maybe disconnected) of any dimension $d \ge 1$. We consider the set of $C^1$ maps $f:M\to M$ which have no absolutely continuous (with respect to Lebesgue) invariant probability measure. We show that this is a residual (dense $G_δ) set in the $C^1$ topology. In the course of the proof, we need a generalization of the usual Rokhlin tower lemma to non-invariant measures. That result may be of independent interest.

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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