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arXiv math/0509630math.DS
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通过鞍点的拓扑压力

Topological pressure via saddle points

Katrin Gelfert, Christian Wolf

摘要:

设$Λ$是光滑黎曼流形$M$上$C^2$ -单同态$f:M\to M$的紧局部极大不变集.本文研究了一类Hölder连续势的拓扑压力$P_{\rm top}(ϕ)$(相对于动力系统$f|Λ$),并分析了它与动力学性质以及几何性质的关系.证明了在非均匀双曲性假设下,$ϕ$的拓扑压力完全由$ϕ$在$Λ$中的$f$的鞍点上的值决定.此外,考虑具有“大”李雅普诺夫指数的鞍点就足够了。我们还对某些非连续势引进了一种形式的压力,并建立了几个变分不等式,最后导出了膨胀率和逃逸率与$Λ$维数之间的关系.我们的结果推广了几个著名的结果,某些非一致双曲型系统。

英文摘要:

Let $Λ$ be a compact locally maximal invariant set of a $C^2$-diffeomorphism $f:M\to M$ on a smooth Riemannian manifold $M$. In this paper we study the topological pressure $P_{\rm top}(ϕ)$ (with respect to the dynamical system $f|Λ$) for a wide class of Hölder continuous potentials and analyze its relation to dynamical, as well as geometrical, properties of the system. We show that under a mild nonuniform hyperbolicity assumption the topological pressure of $ϕ$ is entirely determined by the values of $ϕ$ on the saddle points of $f$ in $Λ$. Moreover, it is enough to consider saddle points with ``large'' Lyapunov exponents. We also introduce a version of the pressure for certain non-continuous potentials and establish several variational inequalities for it. Finally, we deduce relations between expansion and escape rates and the dimension of $Λ$. Our results generalize several well-known results to certain non-uniformly hyperbolic systems.

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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