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arXiv 1502.06535math.DS
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非双曲遍历测度存在性的鲁棒判据

Robust criterion for the existence of nonhyperbolic ergodic measures

Jairo Bochi, Christian Bonatti, Lorenzo J. Díaz

摘要:

我们给出了明确的$C^1$ -开条件,保证了一个双曲同态具有正熵的非双曲遍历测度。实际上,我们的判据提供了一个具有一维中心和正拓扑熵的部分双曲紧集的存在性,在该集上中心李雅普诺夫指数一致为零。该判据的条件在具有鲁棒圈的同构集的$C^1$ -稠密开子集上满足。作为推论,存在一个$C^1$ -开的和稠密的子集的非Anosov鲁棒传递的同构组成的系统的非双曲遍历测度的正熵。该标准是基于一个概念的搅拌机动态定义的严格不变性的一个家庭的光盘。

英文摘要:

We give explicit $C^1$-open conditions that ensure that a diffeomorphism possesses a nonhyperbolic ergodic measure with positive entropy. Actually, our criterion provides the existence of a partially hyperbolic compact set with one-dimensional center and positive topological entropy on which the center Lyapunov exponent vanishes uniformly. The conditions of the criterion are met on a $C^1$-dense and open subset of the set of a diffeomorphisms having a robust cycle. As a corollary, there exists a $C^1$-open and dense subset of the set of non-Anosov robustly transitive diffeomorphisms consisting of systems with nonhyperbolic ergodic measures with positive entropy. The criterion is based on a notion of a blender defined dynamically in terms of strict invariance of a family of discs.

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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