A general procedure which defines a partial ordering of cyclic permutations induced by continuous maps is known for constructing immediate successors to a cycle. We expound on this procedure in terms of labelled digraphs and characteristic polynomials then apply this study to period doubling, the most common route to chaos for a nonlinear dynamical system.
The period-doubling sequence is one of the most well-known aperiodic $0$-$1$ sequences. In this paper, a complete description of its symbolic recurrence plot is given, and formulas for asymptotic values of basic recurrence quantifiers are derived.
Explicit formulas for complexity and unique invariant measure of the period-doubling subshift can be derived from those for the Thue-Morse subshift, obtained by Brlek, De Luca and Varricchio, and Dekking. In this note we give direct proofs based on combinatorial properties of the period-doubling sequence. We also derive explicit formulas for correlation integral and other recurrence characteristics of the period-doubling subshift. As a corollary we obtain that the determinism of this subshift converges to 1 as the distance threshold approaches 0.
In this paper we study the transition to chaos for the restriction to the real and imaginary axes of the tangent family $\{ T_t(z)=i t\tan z\}_{0< t\leq π}$. Because tangent maps have no critical points but have an essential singularity at infinity and two symmetric asymptotic values, there are new phenomena: as $t$ increases we find single instances of "period quadrupling", "period splitting" and standard "period doubling"; there follows a general pattern of "period merging" where two attracting cycles of period $2^n$ "merge" into one attracting cycle of period $2^{n+1}$, and "cycle doubling"…
In this study, replication of a period-doubling cascade in coupled systems with delay is rigorously proved under certain assumptions, which guarantee the existence of bounded solutions and replication of sensitivity. A novel definition for replication of sensitivity is utilized, in which the proximity of solutions is considered in an interval instead of a single point. Examples with simulations supporting the theoretical results concerning sensitivity and period-doubling cascade are provided.
In the present study, we investigate the dynamics of impulsive differential equations driven by a chaotic system. We rigorously prove that, likewise the drive, the response impulsive system is also chaotic. Our results are based on the presence of sensitivity and infinitely many unstable periodic motions. The theoretical results are supported by simulations.
We explore fundamental questions about the renormalization group through a detailed re-examination of Feigenbaum's period doubling route to chaos. In the space of one-humped maps, the renormalization group characterizes the behavior near any critical point by the behavior near the fixed point. We show that this fixed point is far from unique, and characterize a submanifold of fixed points of alternative RG transformations. We build on this framework to systematically distinguish and analyze the allowed singular and `gauge' (analytic and redundant) corrections to scaling, explaining numerical r…
Period Doubling in Area-Preserving Maps: An Associated One Dimensional Problem
已经观察到著名的Feigenbaum-Coullet-Tresser倍周期普适性对于$\field{R}^2$的面积保持映射有对应的普适性。J. J.用重正化方法证明了具有所有二元周期轨道的保面积映射的存在性。P. Eckmann,H. Koch and P. Wittwer(1982 and 1984).由于它是所有非平凡的普遍性问题的情况下,在非耗散系统的维度超过一个,没有分析证明这一时期的两倍普遍性存在的日期。我们认为,倍周期重整化不动点的面积保持地图几乎是一维的,在这个意义上,它是接近以下Henon-like地图:$$H^*(x,u)=(ϕ(x)-u,x-ϕ(ϕ(x)-u)),$$其中$ϕ$解决$$ϕ(x)={2 \over λ} ϕ(ϕ(λx))-x.$$我们然后给一个“证明”的存在性的小解析扰动的解决方案,这个一维问题,并描述了这个解决方案的一些性质。"证明“包括一个分析参数的分解逆分支$ϕ$连同验证的几个不等式和包含的子集$\field{C}$数字。最后,我们提出了一个分析方法的基础上,其接近一维保面积映射的全周期加倍问题。在这方面,本文是一个保守的二维系统中的非平凡重整化问题的一个可能的分析机制的探索。
Spiral wave patterns observed in models of cardiac arrhythmias and chemical oscillations develop alternans and stationary line defects, which can both be thought of as period-doubling instabilities. These instabilities are observed on bounded domains, and may be caused by the spiral core, far-field asymptotics, or boundary conditions. Here, we introduce a methodology to disentangle the impacts of each region on the instabilities by analyzing spectral properties of spiral waves and boundary sinks on bounded domains with appropriate boundary conditions. We apply our techniques to spirals formed …
In this paper, we show the following: the Hausdorff dimension of the spectrum of period-doubling Hamiltonian is bigger than $\log α/\log 4$, where $α$ is the Golden number; there exists a dense uncountable subset of the spectrum such that for each energy in this set, the related trace orbit is unbounded, which is in contrast with a recent result of Carvalho (Nonlinearity 33, 2020); we give a complete characterization for the structure of gaps and the gap labelling of the spectrum. All of these results are consequences of an intrinsic coding of the spectrum we construct in this paper.
We consider a family of strongly-asymmetric unimodal maps $\{f_t\}_{t\in [0,1]}$ of the form $f_t=t\cdot f$ where $f\colon [0,1]\to [0,1]$ is unimodal, $f(0)=f(1)=0$, $f(c)=1$ is of the form and $$f(x)=\left\{ \begin{array}{ll} 1-K_-|x-c|+o(|x-c|)& \mbox{ for }x<c, \\ 1-K_+|x-c|^β+ o(|x-c|^β) &\mbox{ for }x>c, \end{array}\right. $$ where we assume that $β>1$. We show that such a family contains a Feigenbaum-Coullet-Tresser $2^\infty$ map, and develop a renormalization theory for these maps. The scalings of the renormalization intervals of the $2^\infty$ map turn out to be super-exponential and…
Predicting the onset of period-doubling bifurcations via dominant eigenvalue extracted from autocorrelation
Faculty of Science, Kunming University of Science and Technology(昆明理工大学理学院);School of Mathematics and Statistics, Huazhong University of Science and Technology(华中科技大学数学与统计学院);Center for Mathematical Science, Huazhong University of Science and Technology(华中科技大学数学中心);Steklov-Wuhan Institute for Mathematical Exploration, Huazhong University of Science and Technology(华中科技大学Stecklov武汉数学探索中心);Guangdong Provincial Key Laboratory of Mathematical and Neural Dynamical Systems, Great Bay University(大湾区大学广东省数学与神经动力系统重点实验室);Department of Mathematics and Department of Physics, Great Bay University(大湾区大学数学系和物理系)