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arXiv 2102.11239math.DSmath-phmath.MPnlin.CD
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Feigenbaum吸引子的豪斯多夫维数的严格界

Rigorous bounds on the Hausdorff dimension of Feigenbaum attractors

Andrew D Burbanks, Andrew H Osbaldestin, Judi A Thurlby

摘要:

我们计算了具有二次、三次和四次临界点的映射族在倍周期级联累积时吸引子的豪斯多夫维数的严格界。为了做到这一点,我们表示为适当的迭代函数系统使用严格的边界上相应的重整化不动点函数的极限集的吸引子。我们使用区间运算和严格的有向舍入模式来证明相应的维数位于区间(0.5370,0.5392),(0.6040,0.6091)和(0.6395,0.6474)的子区间中。

英文摘要:

We calculate rigorous bounds on the Hausdorff dimension of the attractor at the accumulation of the period-doubling cascade for families of maps with quadratic, cubic, and quartic critical point. To do this, we express the attractors as the limit sets of appropriate Iterated Function Systems constructed using rigorous bounds on the corresponding renormalisation fixed point functions. We use interval arithmetic with rigorous directed rounding modes to show that the respective dimensions lie in subintervals of the intervals (0.5370,0.5392), (0.6040,0.6091), and (0.6395,0.6474).

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