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arXiv 1901.05623math.DScs.ITmath.IT
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平均维数的二重变分原理

Double variational principle for mean dimension

Elon Lindenstrauss, Masaki Tsukamoto

摘要:

我们发展了平均维数论和率失真理论之间的变分原理。我们考虑一个极小极大问题的率失真维度相对于两个变量(度量和措施)。证明了具有标记性质的动力系统的极大极小值等于平均维数。该证明是遍历论、率失真理论和几何测度论的一种新的结合。沿着证明的方式,我们还表明,如果一个动力系统有标记的性质,那么它有一个度量的上度量平均维数等于平均维数。

英文摘要:

We develop a variational principle between mean dimension theory and rate distortion theory. We consider a minimax problem about the rate distortion dimension with respect to two variables (metrics and measures). We prove that the minimax value is equal to the mean dimension for a dynamical system with the marker property. The proof exhibits a new combination of ergodic theory, rate distortion theory and geometric measure theory. Along the way of the proof, we also show that if a dynamical system has the marker property then it has a metric for which the upper metric mean dimension is equal to the mean dimension.

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