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Real Quadratic Julia Sets Can Have Arbitrarily High Complexity
Foundations of Computational Mathematics ( IF 3 ) Pub Date : 2020-04-16 , DOI: 10.1007/s10208-020-09457-w
Cristobal Rojas , Michael Yampolsky

We show that there exist real parameters \(c\in (-2,0)\) for which the Julia set \(J_{c}\) of the quadratic map \(z^{2} + c\) has arbitrarily high computational complexity. More precisely, we show that for any given complexity threshold T(n), there exist a real parameter c such that the computational complexity of computing \(J_{c}\) with n bits of precision is higher than T(n). This is the first known class of real parameters with a non-poly-time computable Julia set.



中文翻译:

真正的二次Julia集可以具有任意高的复杂度

我们显示存在实数参数\(c \ in(-2,0)\),对于它,二次映射\(z ^ {2} + c \)的Julia集\(J_ {c} \)任意具有高计算复杂度。更精确地,我们表明,对于任何给定的复杂度阈值Tn),都存在一个实数参数c,使得具有n位精度的\(J_ {c} \)的计算复杂度高于Tn)。这是具有不可折时可计算Julia集的第一类实参。

更新日期:2020-04-21
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