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Discontinuous bifurcation and coexistence of attractors in a piecewise linear map with a gap 被引量:5
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作者 屈世显 卢永智 +1 位作者 张林 何大韧 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第12期4418-4423,共6页
Coexistence of attractors with striking characteristics is observed in this work, where a stable period-5 attractor coexists successively with chaotic band-ll, period-6, chaotic band-12 and band-6 attractors. They are... Coexistence of attractors with striking characteristics is observed in this work, where a stable period-5 attractor coexists successively with chaotic band-ll, period-6, chaotic band-12 and band-6 attractors. They are induced by dif- ferent mechanisms due to the interaction between the discontinuity and the non-invertibility. A characteristic boundary collision bifurcation, is observed. The critical conditions are obtained both analytically and numerically. 展开更多
关键词 coexistence of attractors piecewise linear map mapping hole discontinuous bifurcation
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Noise destroys the coexistence of periodic orbits of a piecewise linear map 被引量:1
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作者 王参军 杨科利 屈世显 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第3期205-208,共4页
The effects of Gaussian white noise and Gaussian colored noise on the periodic orbits of period-5(P-5) and period-6(P-6) in their coexisting domain of a piecewise linear map are investigated numerically.The probab... The effects of Gaussian white noise and Gaussian colored noise on the periodic orbits of period-5(P-5) and period-6(P-6) in their coexisting domain of a piecewise linear map are investigated numerically.The probability densities of some orbits are calculated.When the noise intensity is D = 0.0001,only the orbits of P-5 exist,and the coexisting phenomenon is destroyed.On the other hand,the self-correlation time τ of the colored noise also affects the coexisting phenomenon.When τc〈τ〈τc,only the orbits of P-5 appear,and the stability of the orbits of P-5 is enhanced.However,when τ〉τc(τc and τc are critical values),only the orbits of P-6 exist,and the stability of the P-6 orbits is enhanced greatly.When τ〈τc,the orbits of P-5 and P-6 coexist,but the stability of the P-5 orbits is enhanced and that of P-6 is weakened with τ increasing. 展开更多
关键词 piecewise linear map noise periodic orbit
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Admissibility Conditions for Symbolic Sequences in Dynamics of Digital Filter with Two's Complement Arithmetic
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作者 袁利国 傅新楚 余荣忠 《Journal of Shanghai University(English Edition)》 CAS 2005年第5期377-384,共8页
In this paper, we discuss a class of piecewise linear hyperbolic maps on the 2-torus. These maps arise in the second-order digital fdter with two' s complement arithmetic. By introducing codings underlying the map op... In this paper, we discuss a class of piecewise linear hyperbolic maps on the 2-torus. These maps arise in the second-order digital fdter with two' s complement arithmetic. By introducing codings underlying the map operations, we give some admissibility conditions for symbolic sequences and find some periodic properties of these symbolic sequences. Then we use these conditions to check the admissibility of periodic symbol sequences. 展开更多
关键词 CODING piecewise linear map admissibility condition symbolic dynamics. coding piecewise linear map admissibility condition symbolic dynamics.
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Symbolic dynamics of Belykh-type maps
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作者 Denghui LI Jianhua XIE 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2016年第5期671-682,共12页
The symbolic dynamics of a Belykh-type map (a two-dimensional discon- tinuous piecewise linear map) is investigated. The admissibility condition for symbol sequences named the pruning front conjecture is proved unde... The symbolic dynamics of a Belykh-type map (a two-dimensional discon- tinuous piecewise linear map) is investigated. The admissibility condition for symbol sequences named the pruning front conjecture is proved under a hyperbolicity condition. Using this result, a symbolic dynamics model of the map is constructed according to its pruning front and primary pruned region. Moreover, the boundary of the parameter region in which the map is chaotic of a horseshoe type is given. 展开更多
关键词 discontinuous piecewise linear map symbolic dynamics pruning front primary pruned region HORSESHOE
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A NEW SIMPLE 2-D PIECEWISE LINEAR MAP
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作者 Zeraoulia ELHADJ Julien Clinton SPROTT 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2010年第2期379-389,共11页
A new simple piecewise linear map of the plane is presented and analyzed, then a detailed study of its dynamical behaviour is described, along with some other dynamical phenomena, especially fixed points and their sta... A new simple piecewise linear map of the plane is presented and analyzed, then a detailed study of its dynamical behaviour is described, along with some other dynamical phenomena, especially fixed points and their stability, observation of a new chaotic attractors obtained via border collision bifurcation. An important resuk about coexisting chaotic attractors is also numerically studied and discussed. 展开更多
关键词 Border collision bifurcation new chaotic attractor piecewise linear map.
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A Perturbing Scheme of Digital Chaos
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作者 刘镔 罗向阳 刘粉林 《Journal of Shanghai Jiaotong university(Science)》 EI 2006年第2期172-176,共5页
With finite computation precision, digital chaos will lose chaotic characteristic. An efficient perturbance-based algorithm perturbing chaos variable algorithm(PCV) was proposed, which can be regarded as a remedy to d... With finite computation precision, digital chaos will lose chaotic characteristic. An efficient perturbance-based algorithm perturbing chaos variable algorithm(PCV) was proposed, which can be regarded as a remedy to digital chaos. After being perturbed, digital chaos systems are able to generate pseudo random sequences with perfect statistical properties and can be used as key stream generators in cryptogram. 展开更多
关键词 CRYPTOGRAPHY CHAOS piecewise linear chaotic map pseudo random number generator
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The Inherent Law of the Unpredictability of Financial Asset Price Fluctuations: Multistability and Chaos
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作者 GU Enguo 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2024年第2期776-804,共29页
This paper aims at understanding the price dynamics generated by the interaction of traders relying on heterogeneous expectations in an asset pricing model.In the present work the authors analyze a financial market po... This paper aims at understanding the price dynamics generated by the interaction of traders relying on heterogeneous expectations in an asset pricing model.In the present work the authors analyze a financial market populated by five types of boundedly rational speculators-two types of fundamentalists,two types of chartists and trend followers which submit buying/selling orders according to different trading rules.The authors formulate a stock market model represented as a 2 dimensional piecewise linear discontinuous map.The proposed contribution to the existing financial literature is two aspects.First,the authors perform study of the model involving a 2 dimensional piecewise linear discontinuous map through a combination of qualitative and quantitative methods.The authors focus on the existence conditions of chaos and the multi-stability regions in parameter plane.Related border collision bifurcation curves and basins of multi-attractors are also given.The authors find that chaos or quasi-period exists only in the case of fixed point being a saddle(regular or flip)and that the coexistence of multiple attractors may exist when the fixed point is an attractor,but it is common for spiral and flip fixed points. 展开更多
关键词 BCB curve CHAOS financial market heterogeneous agents multiple attractors piecewise linear discontinuous map
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