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arXiv 2001.03958math.DSmath-phmath.MP
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下联合谱半径的李雅普诺夫谱性质和连续性

Lyapunov spectrum properties and continuity of the lower joint spectral radius

Reza Mohammadpour

摘要:

研究了矩阵上循环的遍历优化和李雅普诺夫指数的多重分形行为。我们证明了广义上圈的熵谱在李雅普诺夫谱边界处的连续性,其中$h_{top}(E(α_{t}))\ \rightarrow h_{top}(E(β(\mathcal{A}))$。我们还证明了在有限型的混合子移位上,这种余圈的李雅普诺夫谱等于熵谱为正的集合的闭包。此外,我们证明了这种上循环的限制变分原理。在线性上圈满足锥条件的假设下,证明了一般上圈的下联合谱半径的连续性。

英文摘要:

We study ergodic optimization and multifractal behavior of Lyapunov exponents for matrix cocycles. We show the continuity of the entropy spectrum at the boundary of Lyapunov spectrum in the sense that $h_{top}(E(α_{t}))\ \rightarrow h_{top}(E(β(\mathcal{A}))$ for generic cocycles, where $E(α)=\{x\in X: \lim_{n\rightarrow \infty}\frac{1}{n}\log \|\mathcal{A}^{n}(x)\|=α\}$. We also show that the Lyapunov spectrum is equal to the closure of the set where the entropy spectrum is positive for such cocycles over mixing subshifts of finite type. Moreover, we prove the restricted variational principle for such cocycles. We prove the continuity of the lower joint spectral radius for general cocycles under the assumption that linear cocycles satisfy a cone condition.

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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