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arXiv 2301.06233math.DS
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光滑动力系统的维数逼近

Dimension approximation in smooth dynamical systems

Yongluo Cao, Juan Wang, Yun Zhao

摘要:

对于保持正熵的遍历测度$μ$的$C^{1+α}$映射$f$的非共形排斥子$Λ$,本文证明了$μ$的李雅普诺夫维数可以用马蹄序列的Carathéodory奇异维数逐渐逼近.对于保持正熵的双曲遍历测度$μ$的$C^{1+α}$同构$f$,如果$(f, μ)$只有两个李雅普诺夫指数$λ_u(μ)>0>λ_s(μ)$,则$μ$的Hausdorff维数或下盒维数或上盒维数可以用对应的马蹄形维数$\{Λ_n\}$来近似.如果$f$是一个关于$μ$具有支配Oseledet分裂的$C^1$单同态,则同样的陈述成立。

英文摘要:

For a non-conformal repeller $Λ$ of a $C^{1+α}$ map $f$ preserving an ergodic measure $μ$ of positive entropy, this paper shows that the Lyapunov dimension of $μ$ can be approximated gradually by the Carathéodory singular dimension of a sequence of horseshoes. For a $C^{1+α}$ diffeomorphism $f$ preserving a hyperbolic ergodic measure $μ$ of positive entropy, if $(f, μ)$ has only two Lyapunov exponents $λ_u(μ)>0>λ_s(μ)$, then the Hausdorff or lower box or upper box dimension of $μ$ can be approximated by the corresponding dimension of the horseshoes $\{Λ_n\}$. The same statement holds true if $f$ is a $C^1$ diffeomorphism with a dominated Oseledet's splitting with respect to $μ$.

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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