管状维数:叶向渐近局部乘积结构,以及熵与体积增长
Tubular dimension: Leaf-Wise Asymptotic Local Product Structure, and Entropy and Volume Growth
AI总结:
本文引入管状维数并给出计算公式,利用该概念证明了微分同胚条件测度的渐近局部乘积结构,给出了条件熵间隙的体积增长界,并计算了特定映射的最大熵测度条件熵,为解决Binder-DeMarco猜想奠定基础。
摘要:
我们引入了管状维数的概念,并给出了其计算公式。作为应用,我们证明了闭Riemann流形上$C^{1+γ}$微分同胚的每个不变测度,在不稳定叶的中间叶状结构上的条件测度具有渐近局部乘积结构。作为第二个应用,我们以体积增长的形式证明了对任意两个相邻条件熵之间间隙的界。作为第三个应用,对于某些$C^\infty$映射,我们计算了最大熵测度的所有条件熵;特别地,作为推论,在后续论文中我们计算了$\mathbb{C}\mathbb{P}^k$($k\geq 1$)的全纯自同态平衡测度的Hausdorff维数,给出了Binder-DeMarco猜想的解,并回答了Fornæss和Sibony的问题。
英文摘要:
We introduce the notion of tubular dimension, and give a formula for it. As an application we show that every invariant measure of a $C^{1+γ}$ diffeomorphism of a closed Riemannian manifold admits an asymptotic local product structure for conditional measures on intermediate foliations of unstable leaves. As a second application, we prove a bound on the gap between any two consecutive conditional entropies, in the form of volume growth. As a third application, for certain $C^\infty$ maps we compute all conditional entropies for the measure of maximal entropy; And in particular as a consequence, in a follow-up paper we compute the Hausdorff dimension of the equilibrium measure of holomorphic endomorphisms of $\mathbb{C}\mathbb{P}^k$, $k\geq 1$, giving a solution to the Binder-DeMarco conjecture, and answering a question of Fornæss and Sibony.
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