Exotic Attractors

This book grew out of the work developed at the University of Warwick, under the supervision of Ian Stewart, which formed the core of my Ph.D. Thesis.

Exotic Attractors

This book grew out of the work developed at the University of Warwick, under the supervision of Ian Stewart, which formed the core of my Ph.D. Thesis. Most of the results described were obtained in joint work with Ian; as usual under these circumstances, many have been published in research journals over the last two years. Part of Chapter 3 was also joint work with Peter Ashwin. I would like to stress that these were true collaborations. We worked together at all stages; it is meaningless to try to identify which idea originated from whom. While preparing this book, however, I felt that a mere description of the results would not be fitting. First of all, a book is aimed at a wider audience than papers in research journals. More importantly, the work should assume as little as possible, and it should be brought to a form which is pleasurable, not painful, to read.

Exotic Attractors

Thus “exotic attractors” are not a class of attractors with specific properties; the adjective “exotic” is not a mathematical characterization. It merely indicates that in both problems the attractors in question, not necessarily ...

Exotic Attractors

This book grew out of the work developed at the University of Warwick, under the supervision of Ian Stewart, which formed the core of my Ph.D. Thesis. Most of the results described were obtained in joint work with Ian; as usual under these circumstances, many have been published in research journals over the last two years. Part of Chapter 3 was also joint work with Peter Ashwin. I would like to stress that these were true collaborations. We worked together at all stages; it is meaningless to try to identify which idea originated from whom. While preparing this book, however, I felt that a mere description of the results would not be fitting. First of all, a book is aimed at a wider audience than papers in research journals. More importantly, the work should assume as little as possible, and it should be brought to a form which is pleasurable, not painful, to read.

Exotic Attractors

Exotic Attractors


Algebraic and Combinatorial Computational Biology

Graph automorphisms may also play a role in producing more exotic attractors. For example, in Fig. 8.17 we see chaotic attractors in a network of only five nodes, with four perfectly symmetric overlapping 3-cycles. There is an attractor ...

Algebraic and Combinatorial Computational Biology

Algebraic and Combinatorial Computational Biology introduces students and researchers to a panorama of powerful and current methods for mathematical problem-solving in modern computational biology. Presented in a modular format, each topic introduces the biological foundations of the field, covers specialized mathematical theory, and concludes by highlighting connections with ongoing research, particularly open questions. The work addresses problems from gene regulation, neuroscience, phylogenetics, molecular networks, assembly and folding of biomolecular structures, and the use of clustering methods in biology. A number of these chapters are surveys of new topics that have not been previously compiled into one unified source. These topics were selected because they highlight the use of technique from algebra and combinatorics that are becoming mainstream in the life sciences. Integrates a comprehensive selection of tools from computational biology into educational or research programs Emphasizes practical problem-solving through multiple exercises, projects and spinoff computational simulations Contains scalable material for use in undergraduate and graduate-level classes and research projects Introduces the reader to freely-available professional software Supported by illustrative datasets and adaptable computer code

Mental Mechanisms

(b) A cyclic attractor with spiraling transients beginning at points inside and outside of it. attractor, or it maybe a cycle, in which case it is called a cyclic attractor (see Figure 5.4). More exotic attractors are also possible, ...

Mental Mechanisms

A variety of scientific disciplines have set as their task explaining mental activities, recognizing that in some way these activities depend upon our brain. But, until recently, the opportunities to conduct experiments directly on our brains were limited. As a result, research efforts were split between disciplines such as cognitive psychology, linguistics, and artificial intelligence that investigated behavior, while disciplines such as neuroanatomy, neurophysiology, and genetics experimented on the brains of non-human animals. In recent decades these disciplines integrated, and with the advent of techniques for imaging activity in human brains, the term cognitive neuroscience has been applied to the integrated investigations of mind and brain. This book is a philosophical examination of how these disciplines continue in the mission of explaining our mental capacities.

Dynamics of Coupled Map Lattices and of Related Spatially Extended Systems

Ann . Math . ( 2 ) 122 , 1-25 ( 1985 ) . 23. J. Buescu : Exotic Attractors . ( Birkhäuser Verlag , Basel 1997 ) . 24. Y. Cao : A note about Milnor attractor and riddled basin . Chaos , Solitons and Fractals 19 , 759–764 ( 2004 ) . 25.

Dynamics of Coupled Map Lattices and of Related Spatially Extended Systems

This book is about the dynamics of coupled map lattices (CML) and of related spatially extended systems. It will be useful to post-graduate students and researchers seeking an overview of the state-of-the-art and of open problems in this area of nonlinear dynamics. The special feature of this book is that it describes the (mathematical) theory of CML and some related systems and their phenomenology, with some examples of CML modeling of concrete systems (from physics and biology). More precisely, the book deals with statistical properties of (weakly) coupled chaotic maps, geometric aspects of (chaotic) CML, monotonic spatially extended systems, and dynamical models of specific biological systems.

Bifurcation Symmetry and Patterns

... UK Buescu , J. , Instituto Superior Técnico , Lisaboa , Portugal The Symmetry Perspective From Equilibrium to Chaos in Phase Space and Physical Space Exotic Attractors From Liapunov Stability to Riddled Basins 2002. 342 pages .

Bifurcation  Symmetry and Patterns

The latest developments on both the theory and applications of bifurcations with symmetry. The text includes recent experimental work as well as new approaches to and applications of the theory to other sciences. It shows the range of dissemination of the work of Martin Golubitsky and Ian Stewart and its influence in modern mathematics at the same time as it contains work of young mathematicians in new directions. The range of topics includes mathematical biology, pattern formation, ergodic theory, normal forms, one-dimensional dynamics and symmetric dynamics.

Nonlinear Dynamics in Engineering Systems

1b only) and the grey ones the union of the basins of ZR attractors (or their bifurcated attractors in fig. 1b). The black regions represent the basins of exotic attractors, such as (2, 1) in figs. 2-4. The first ZR orbit (1,1) becomes ...

Nonlinear Dynamics in Engineering Systems

The International Union of Theoretical and Applied Mechanics (IUTAM) initiated and sponsored an International Symposium on Nonlinear Dynamics in Engineering Systems held in 1989 in Stuttgart, FRG. The Symposium was intended to bring together scientists working in different fields of dynamics to exchange ideas and to discuss new trends with special emphasis on nonlinear dynamics in engineering systems. A Scientific Committee was appointed by the Bureau of IUTAM with the following members: S. Arimoto (Japan), F.L. Chernousko (USSR), P.J. Holmes (USA), C.S. Hsu (USA), G. looss (France), F.C. Moon (USA), W. Schiehlen (FRG), Chairman, G. Schmidt (GDR), W. Szemplinska-Stupnicka (Poland), J.M.T. Thompson (UK), H. Troger (Austria). This committee selected the participants to be invited and the papers to be presented at the Symposium. As a result of this procedure 78 active scientific participants from 22 countries followed the invitation, and 44 papers were presented in lecture and poster sessions. They are collected in this volume. At the Symposium an exhibition with experiments took place and the movie "An Introduction to the Analysis of Chaotic Dynamics" by E.J. Kreuzer et.al. was presented. The scientific lectures were devoted to the following topics: o Dynamic Structural Engineering Problems, o Analysis of Nonlinear Dynamic Systems, o Bifurcation Problems, o Chaotic Dynamics and Control Problems, o Miscellaneous Problems, o Experimental and Theoretical Investigations, o Chaotic Oscillations of Engineering Systems, o Characterization of Nonlinear Dynamic Systems, o Nonlinear Stochastic Systems.

Deterministic Nonlinear Systems

Special types of DS behavior and special 'exotic' attractors can be observed under certain conditions, viz., strange nonchaotic and chaotic nonstrange attractors. Deterministic (dynamical) chaos is the most important and interesting ...

Deterministic Nonlinear Systems

This text is a short yet complete course on nonlinear dynamics of deterministic systems. Conceived as a modular set of 15 concise lectures it reflects the many years of teaching experience by the authors. The lectures treat in turn the fundamental aspects of the theory of dynamical systems, aspects of stability and bifurcations, the theory of deterministic chaos and attractor dimensions, as well as the elements of the theory of Poincare recurrences.Particular attention is paid to the analysis of the generation of periodic, quasiperiodic and chaotic self-sustained oscillations and to the issue of synchronization in such systems. This book is aimed at graduate students and non-specialist researchers with a background in physics, applied mathematics and engineering wishing to enter this exciting field of research.

Computational Neuroscience Cortical Dynamics

Sauer, T., Abstracts for SIAM Pacific Rim Dynamical Systems Conference, August 9-13, 2000, Hawaii, Maui, 51; Chaotic itinerancy based on attractors of onedimensional maps. Chaos 13 (2003) 947-952. Buescu, J., Exotic attractors: from ...

Computational Neuroscience  Cortical Dynamics

This book presents thoroughly revised tutorial papers based on lectures given by leading researchers at the 8th International Summer School on Neural Networks in Erice, Italy, in October/November 2003. The eight tutorial papers presented provide competent coverage of the field of cortical dynamics, consolidating recent theoretical and experimental results on the processing, transmission, and imprinting of information in the brain as well as on important functions of the cortical area, such as cortical rhythms, cortical neural plasticity, and their structural basis and functional significance. The book is divided in two topical sections on fundamentals of cortical dynamics and mathematical models of cortical dynamics.

Nonlinear Dynamics

There are even more exotic attractors (quasiperiodic, strange and so on) and other orbits which we will study in this and later chapters. 3.1 Autonomous and Nonautonomous Systems To start with we will introduce the notion of autonomous ...

Nonlinear Dynamics

This self-contained treatment covers all aspects of nonlinear dynamics, from fundamentals to recent developments, in a unified and comprehensive way. Numerous examples and exercises will help the student to assimilate and apply the techniques presented.

Theory of Practical Cellular Automaton

The above four developmental prospects are the “attractors” of cellular automata's evolution under random initial conditions. The first three types are approximately analogous to stationary attractors, limit cycles and exotic attractors ...

Theory of Practical Cellular Automaton

This book addresses the intellectual foundations, function, modeling approaches and complexity of cellular automata; explores cellular automata in combination with genetic algorithms, neural networks and agents; and discusses the applications of cellular automata in economics, traffic and the spread of disease. Pursuing a blended approach between knowledge and philosophy, it assigns equal value to methods and applications.

Nonlinear Dynamical Systems in Economics

Exotic Attractors, Birkhäuser, Boston, 1997. C. Chiarella, R. Dieci, and L. Gardini. Asset price dynamics in a financial market with fundamentalists and chartists. Discrete Dynamics in Nature and Society, Vol 6, 69-99, 2001.

Nonlinear Dynamical Systems in Economics

Many problems in theoretical economics are mathematically formalized as dynam ical systems of difference and differential equations. In recent years a truly open approach to studying the dynamical behavior of these models has begun to make its way into the mainstream. That is, economists formulate their hypotheses and study the dynamics of the resulting models rather than formulating the dynamics and studying hypotheses that could lead to models with such dynamics. This is a great progress over using linear models, or using nonlinear models with a linear approach, or even squeezing economic models into well-studied nonlinear systems from other fields. There are today a number of economic journals open to publishing this type of work and some of these have become important. There are several societies which have annual meetings on the subject and participation at these has been growing at a good rate. And of course there are methods and techniques avail able to a more general audience, as well as a greater availability of software for numerical and graphical analysis that makes this type of research even more excit ing. The lecturers for the Advanced School on Nonlinear Dynamical Systems in Economics, who represent a wide selection of the research areas to which the the ory has been applied, agree on the importance of simulations and computer-based analysis. The School emphasized computer applications of models and methods, and all contributors ran computer lab sessions.

Oligopoly Dynamics

Buescu, J., 1997, Exotic Attractors, Birkhäuser, Boston. Chiarella, C., R. Dieci and Gardini, L., 2001a, “Asset price dynamics in a financial market with fundamentalists and chartists' Discrete Dynamics in Nature and Society, 6, 69-99.

Oligopoly Dynamics

These proceedings are from a conference held at the Centre for Regional Science (CERUM) at Umea Umeâ University, Sweden, 17-18 June 2001. Unlike Un1ike many conference proceedings, this volume contains only on1y invited invited contribu contribu tions tions on specified topics so as to make the book coherent and self-contained. The authors and editors hope that this coherence will make the volume use fu1 fuI also as a text for courses in industrial organisation. To this end two chap ters on the history of oligopoly theory, from the beginnings with Cournot 1838, to the present day, and one chapter on modem methods for analysing iterated discrete time maps, have been inserted at the beginning ofthe book. Unlike Un1ike most current literature on games and oligopoly, this book is not focused on the usual topics of game theory: optimal strategies, dominance, and equilibrium. Rather it is the evolutionary dynamics, often of a complex type, inc1uding deterministic chaos, which are in focus. The contributions, after the historical and the methodological introductions, represent various segments of the research frontier in this area, though pains have been taken to tie some of the models to a number of most promising contributions from the frugal period 1929-1941, which have suffered from unjust neglect in the following industrial organisation literature.

Informative Psychometric Filters

Buescu, J. (1997) Exotic Attractors. Basel: Birkh ̈auser Verlag. B ̈uhler, W. K. (1986) Gauss: Eine biographische Studie. Berlin: Springer- Verlag. Buljan, H. and Paar, V. (2002) Parry measure and the topological entropy of chaotic ...

Informative Psychometric Filters

This book is a series of case studies with a common theme. Some refer closely to previous work by the author, but contrast with how they have been treated before, and some are new. Comparisons are drawn using various sorts of psychological and psychophysiological data that characteristically are particularly nonlinear, non-stationary, far from equilibrium and even chaotic, exhibiting abrupt transitions that are both reversible and irreversible, and failing to meet metric properties. A core idea is that both the human organism and the data analysis procedures used are filters, that may variously preserve, transform, distort or even destroy information of significance.

Interaction and Market Structure

Buescu, J. (1997): Exotic Attractors, Birkhäuser. Bultez, A. V. and P. A. Naert (1975): Consistent Sum-Constrained Models. Journal of the American Statistical Association 70, 529-535. Case, J.H. (1979): Economics and the Competitive ...

Interaction and Market Structure

This book is a collection of essays which examine how the properties of aggregate variables are influenced by the actions and interactions of heterogenous individuals in different economic contexts. The common denominator of the essays is a critique of the representative agent hypothesis. If this hypothesis were correct, the behaviour of the aggregate variable would simply be the reproduction of individual optimising behaviour. In the methodology of the hard sciences, one of the achievements of the quantum revolution has been the rebuttal of the notion that aggregate behaviour can be explained on the basis of the behaviour of a single unit: the elementary particle does not even exist as a single entity but as a network, a system of interacting units. In this book, new tracks in economics which parallel the developments in physics mentioned above are explored. The essays, in fact are contributions to the analysis of the economy as a complex evolving system of interacting agents.

Chaos and Forecasting

... or even better once a parsimonious set of stochastic regressors is determined using, for example, the approach of Cheng and Tong (1992) and Yao and Tong (1994), we can set about searching for exotic attractors within this set.

Chaos and Forecasting

It is now generally recognised that very simple dynamical systems can produce apparently random behaviour. In the last couple of years, attention has turned to focus on the flip side of this coin: random-looking time series (or random-looking patterns in space) may indeed be the result of very complicated processes or “real noise”, but they may equally well be produced by some very simple mechanism (a low-dimensional attractor). In either case, a long-term prediction will be possible only in probabilistic terms. However, in the very short term, random systems will still be unpredictable but low-dimensional chaotic ones may be predictable (appearances to the contrary). The Royal Society held a two-day discussion meeting on topics covering diverse fields, including biology, economics, geophysics, meteorology, statistics, epidemiology, earthquake science and many others. Each topic was covered by a leading expert in the field. The meeting dealt with different basic approaches to the problem of chaos and forecasting, and covered applications to nonlinear forecasting of both artificially-generated time series and real data from context in the above-mentioned diverse fields. This book marks a rather special and rare occasion on which prominent scientists from different areas converge on the same theme. It forms an informative introduction to the science of chaos, with special reference to real data. Contents:Orthogonal Projection, Embedding Dimension and Sample Size in Chaotic Time Series from a Statistical Perspective (B Cheng & H Tong)A Theory of Correlation Dimension for Stationary Time Series (C D Cutler)On Prediction and Chaos in Stochastic Systems (Q W Yao & H Tong)Locally Optimized Prediction of Nonlinear Systems: Stochastic and Deterministic (L A Smith)A Poisson Distribution for the BDS Test Statistic for Independence in a Time Series (R C L Wolff)Chaos and Nonlinear Forecastability in Economics and Finance (B LeBaron)Paradigm Change in Prediction (A S Weigend)and other papers Readership: Mathematicians, economists, statisticians and nonlinear scientists. keywords: “… useful and recommended for forecast researchers striving for a more realistic methodology that goes substantially beyond conventional statistical theory.” M A Kaboudan

The Duffing Equation

... periodic motions) and aperiodic motions (strange attractors) with simple periodic motions coexisting with exotic attractors in some parameter windows, and vi) the basins of attraction of responses can exhibit a fractal structure.

The Duffing Equation

The Duffing Equation: Nonlinear Oscillators and their Behaviour brings together the results of a wealth of disseminated research literature on the Duffing equation, a key engineering model with a vast number of applications in science and engineering, summarizing the findings of this research. Each chapter is written by an expert contributor in the field of nonlinear dynamics and addresses a different form of the equation, relating it to various oscillatory problems and clearly linking the problem with the mathematics that describe it. The editors and the contributors explain the mathematical techniques required to study nonlinear dynamics, helping the reader with little mathematical background to understand the text. The Duffing Equation provides a reference text for postgraduate and students and researchers of mechanical engineering and vibration / nonlinear dynamics as well as a useful tool for practising mechanical engineers. Includes a chapter devoted to historical background on Georg Duffing and the equation that was named after him. Includes a chapter solely devoted to practical examples of systems whose dynamic behaviour is described by the Duffing equation. Contains a comprehensive treatment of the various forms of the Duffing equation. Uses experimental, analytical and numerical methods as well as concepts of nonlinear dynamics to treat the physical systems in a unified way.

Elements of Mathematical Ecology

A more pressing question is whether we can observe other, more exotic, attractors. Can an autonomous planar system of differential equations possess a chaotic attractor? No. We will need a higher (> 3) dimension system of differential ...

Elements of Mathematical Ecology

Elements of Mathematical Ecology provides an introduction to classical and modern mathematical models, methods, and issues in population ecology. The first part of the book is devoted to simple, unstructured population models that ignore much of the variability found in natural populations for the sake of tractability. Topics covered include density dependence, bifurcations, demographic stochasticity, time delays, population interactions (predation, competition, and mutualism), and the application of optimal control theory to the management of renewable resources. The second part of this book is devoted to structured population models, covering spatially-structured population models (with a focus on reaction-diffusion models), age-structured models, and two-sex models. Suitable for upper level students and beginning researchers in ecology, mathematical biology and applied mathematics, the volume includes numerous clear line diagrams that clarify the mathematics, relevant problems thoughout the text that aid understanding, and supplementary mathematical and historical material that enrich the main text.

Dynamical Systems Bifurcation Analysis and Applications

Buescu, J.: Exotic Attractors: from Liapunov Stability to Riddled Basins. Birkhäuser Verlag, Switzerland (1997) 13. Milnor, J.: On the concept of attractor. Commun. Math. Phys. 99, 177–195 (1985) 14. Dai, J., He, D.-R., Xu, X.-L., Hu, ...

Dynamical Systems  Bifurcation Analysis and Applications

This book is the result of ​Southeast Asian Mathematical Society (SEAMS) School 2018 on Dynamical Systems and Bifurcation Analysis (DySBA). It addresses the latest developments in the field of dynamical systems, and highlights the importance of numerical continuation studies in tracking both stable and unstable steady states and bifurcation points to gain better understanding of the dynamics of the systems. The SEAMS School 2018 on DySBA was held in Penang from 6th to 13th August at the School of Mathematical Sciences, Universiti Sains Malaysia.The SEAMS Schools are part of series of intensive study programs that aim to provide opportunities for an advanced learning experience in mathematics via planned lectures, contributed talks, and hands-on workshop. This book will appeal to those postgraduates, lecturers and researchers working in the field of dynamical systems and their applications. Senior undergraduates in Mathematics will also find it useful.