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arXiv 1506.03037math.DS
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Kusuoka测度的遍历论

Ergodic Theory of Kusuoka Measures

Anders Johansson, Anders Öberg, Mark Pollicott

摘要:

在自相似分形集的分析中,Kusuoka测度起着重要的作用(参见。\cite{kusuoka2}、\cite{kajino}、\cite{str3})。在这里,我们研究Kusuoka测度从遍历理论的观点,看作是一个符号空间上的不变测度。我们的研究表明Kusuoka测度将Bernoulli测度及其性质推广到了有限维向量空间的高维空间。我们的主要结果是,函数上的转移算子有一个谱间隙时,限制到一定的巴拿赫空间,包含Hölder连续函数,以及高度不连续的$g$ -功能相关联的Kusuoka措施。因此,我们得到指数衰减的相关性。此外,我们提供了一些显式的收敛速度为一个家庭的广义Sierpiecki垫片。

英文摘要:

In the analysis on self-similar fractal sets, the Kusuoka measure plays an important role (cf. \cite{kusuoka2}, \cite{kajino}, \cite{str3}). Here we investigate the Kusuoka measure from an ergodic theoretic viewpoint, seen as an invariant measure on a symbolic space. Our investigation shows that the Kusuoka measure generalizes Bernoulli measures and their properties to higher dimensions of an underlying finite dimensional vector space. Our main result is that the transfer operator on functions has a spectral gap when restricted to a certain Banach space that contains the Hölder continuous functions, as well as the highly discontinuous $g$-function associated to the Kusuoka measure. As a consequence, we obtain exponential decay of correlations. In addition, we provide some explicit rates of convergence for a family of generalized Sierpiśki gaskets.

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