Chaos derives from the Greek Χάος and typically refers to unpredictability. In the metaphysical sense, it is the opposite of law and order: unrestrictive, both creative and destructive.
The word χάος did not mean "disorder" in classical-period ancient Greece. It meant "the primal emptiness, space". It is derived from the Proto-Indo-European root ghn or ghen meaning "gape, be wide open": compare "chasm" (from Greek), and Anglo-Saxon gānian (= "yawn"), geanian, ginian (= "gape wide"); see also Old Norse Ginnunga Gap. Due to people misunderstanding early Christian uses of the word, the meaning of the word changed to "disorder". (The Ancient Greek for "disorder" is ταραχη.).
Mathematically chaos means an aperiodic deterministic behavior which is very sensitive to its initial conditions, i.e. infinitesimal perturbations of boundary conditions for a chaotic dynamic system originate finite variations of the orbit in the phase space; see chaos theory
More on [ Chaos ]

The Non-Linear Lab - Covers many aspects and appliations of nonlinear mathematic. Includes interactive applets, tutorials and gallery.
Meta Description: [ non linear dynamics, chaos, fractals,
duffing, lorenz, rossler, logistic, non linear dynamics, non linear
dynamics, physics, java, pendulum ]
A Beginner's Guide to Chaos - Covers the geometric and complex iterative framework by comparing chaos to randomness. Includes illustrations and programs.
A Route into Chaos: The Logistic Equation - Introduction to sequence related functions. Addresses basics, logistic equation and Lyapunov exponents. [English, German]
An Introduction to Lindenmayer Systems - Discusses the modeling of fractal plants with L-systems. Includes theoretical background, references and code.
Meta Description: [ Brief Introduction to Lindenmayer Systems (L-systems) and their graphic interpretation. Simplest L-systems type: 2D D0L-systems ]
Centre for Chaos Control and Synchronization - Research center of the City University of Hong Kong concerned with fundamental research and industrial applications. Includes mission statement, member list, publications, project and contact information.
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Chaos and the Solar System - Article about the development of the theory and its astromomic insights.
Chaos at Maryland - Research group at the University of Maryland. Includes papers, gallery, database, abstracts, software, bibliography and contact.
Chaos Demonstrations - Introductory course on chaos from the California Institute of Technology, adressing basics, Lorenz attractor and Chua's Circuit. Includes program source code and bibliography.
Chaos Metalink - Resource for the scientific and non-scientific communities. Includes bibliography, gallery, tutorials, and softwares.
Meta Description: [ Bringing Chaos to the Web since 1995 ]
Chaos Research Group - Interdisciplinary research group at the University of Tennessee concerned with deterministic nonlinear dynamic aspects. Includes overview, publications, bibliography, monographs, glossary and project information.
Meta Description: [ The Chaos Research Group studies nonlinear dynamics and chaos in engineering systems. ]
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Chaos Theory and Education - Article that describes how the theory can be applied to education and teaching. Includes citations.
Meta Description: [ Library Reference Search, Offers an article on how chaos theory can impact education. ]
Chaos Theory for Beginners; an Introduction - Brief introduction on attractors and disturbances, addressing the basics with examples.
Meta Description: [ Chaos Theory for Beginners; Abarim Publications' fun-filled introduction into the wonderful world of Chaos Theory. ]
Chaos Theory: A Brief Intro - Brief introduction to the theory. Includes an essay describing fractional dimensions.
Chaos: A Pictorial Introduction - Illustrates some essential features of the theory which have received media attention in recent years. Includes animated pictures.
Chaos: Making a New Science - Excerpt from the bestseller that brought the forefront of research to public eye. Includes illustrations and links.
ChaosBook - Lecture notes on periodic orbits.
CompLexicon - Terminology glossary about complex systems and chaotic dynamics.
Continued Fractions and Chaos - Scientific paper exploring some results of the theory of chaotic dynamical systems. Includes abstract, proceeding and references.
Emergence of Chaos - Demonstrates how chaos emerges following a change in a parameter. Includes mathematical formulations and diagrams.
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Experimental Chaos Conference - Biennial meeting focusing on experimental work in nonlinear dynamics and chaos. Includes proceedings and contact information.
In the Wake of Chaos - Short review of book exposing the actual philosophical implications of chaos theory.
Meta Description: [ Unpredictable Order in Dynamical Systems | 'Chaos' has rapidly approached 'quantum' as the favourite scientific buzz-word of crackpots, pseudo-scientists, and others of that ilk... ]
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Java Chaos Simulator - Program designed to create and experiment with classical billiard systems and analyze their chaotic properties. Includes animated tutorial and system requirements.
Meta Description: [ A Java 1.1 applet which allows you to create a wide variety of classical systems similar to billiard tables. The program will simulate the behavior of an enclosed object. Documentation and user tutorial included. ]
Online Chaos Course - Interactive, nontechnical introduction to chaos physics and chaotic motion in classical and quantum mechanics.
Meta Description: [ An interactive
introduction for everyone to Chaos Physics
and Chaotic Motion in Classical and Quantum Mechanics ]
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Quatuor - Discusses the order of deterministic chaos. Includes pictures and background about fractal dimensions.
Meta Description: [ Où l'on montre que la démarche artistique peut être utile pour faire avancer la pensée scientifique. Pour une fois c'est l'art qui explique la science et non l'inverse ]
Sci.nonlinear FAQ - FAQs collection from the sci.nonlinear newsgroup. Addresses basics, tutorial, applications and computational resources.
Society for Chaos Theory in Psychology and Life Sciences - Brings together researchers, theoreticians and practitioners interested in applying dynamical systems theory. Includes membership information, publications, meetings, tutorials and other resources.
The Chaos Hypertextbook - Covering several aspects of the theory by topics, including nonlinear dynamics. Includes experiments for programmable calculators and definitions.
Meta Description: [ This page is a part of The Chaos Hypertextbook™ — A four chapter book, fully updated and enhanced for the web. The theory behind the sumptuous images and mathematical jargon tossed about in popular culture today. Simple experiments for programmable calculators, instructions for drawing fracta... ]
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The Feigenbaum Fractal - Comprehensive analysis of the Feigenbaum set. Addresses mathematical and historical background.
Meta Description: [ Complete run-through of the Feigenbaum fractal ]
The Macsin Research Group - Research group concerned with various aspects of modeling, analysis and control of nonlinear and chaotic dynamics systems. Includes project and contact information.
Wikipedia: Chaos Theory - Free encyclopedia article describing the basics of the theory. Addresses mathematical, physical and historical aspects.
Yahoo Groups: Caostheory - Discusses the theory and its applications in various fields, such as medicine, astronomy and art.
Meta Description: [ caostheory: egroup for chaos theory ]
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