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arXiv 1902.07578math.DS
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超越拓扑双曲性:L-阴影性质

Beyond topological hyperbolicity: the L-shadowing property

A. Artigue, B. Carvalho, W. Cordeiro, J. Vieitez

AI总结:

本文研究紧空间动力系统的L-阴影性质,证明结构稳定微分同胚和部分伪Anosov微分同胚满足该性质,并借助谱分解、拓扑半马蹄及正有限可扩性给出其刻画与推论。

摘要:

本文进一步探讨文献[17]中针对紧空间上动力系统定义的L-阴影性质。我们证明了结构稳定微分同胚以及二维球面上某些伪Anosov微分同胚满足该性质。满足L-阴影性质的同胚具有谱分解,其中基本集要么是可扩的,要么包含任意小的拓扑半马蹄(限制为与移位半共轭的周期集)。为此,我们利用局部稳定集与不稳定集以及经典阴影性质来刻画L-阴影性质。我们构造了具有L-阴影性质且包含任意小拓扑半马蹄但没有周期点的同胚。最后,我们证明正有限可扩性联合阴影性质可推出空间是有限的。

英文摘要:

In this paper we further explore the L-shadowing property defined in [17] for dynamical systems on compact spaces. We prove that structurally stable diffeomorphisms and some pseudo-Anosov diffeomorphisms of the two-dimensional sphere satisfy this property. Homeomorphisms satisfying the L-shadowing property have a spectral decomposition where the basic sets are either expansive or contain arbitrarily small topological semi-horseshoes (periodic sets where the restriction is semiconjugate to a shift). To this end, we characterize the L-shadowing property using local stable and unstable sets and the classical shadowing property. We exhibit homeomorphisms with the L-shadowing property and arbitrarily small topological semi-horseshoes without periodic points. At the end, we show that positive finite-expansivity jointly with the shadowing property imply that the space is finite.

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