The study of systems which respond disproportionately (nonlinearly) to initial conditions or perturbing stimuli. Nonlinear systems may exhibit "chaos" which is classically characterized as sensitive dependence on initial conditions. Chaotic systems, while distinguished from more ordered periodic systems, are not random. When their behavior over time is appropriately displayed (in "phase space"), constraints are evident which are described by "strange attractors". Phase space representations of chaotic systems, or strange attractors, usually reveal fractal (FRACTALS) self-similarity across time scales. Natural, including biological, systems often display nonlinear dynamics and chaos.

Descriptor ID	D017711
MeSH Number(s)	E05.599.850 H01.548.675
Concept/Terms	Nonlinear Dynamics Nonlinear Dynamics Dynamics, Nonlinear Nonlinear Dynamic Non-linear Dynamics Dynamics, Non-linear Non linear Dynamics Non-linear Dynamic Chaos Theory Chaos Theory Chaos Theories Theories, Chaos Theory, Chaos Models, Nonlinear Models, Nonlinear Model, Nonlinear Nonlinear Model Nonlinear Models Non-linear Models Model, Non-linear Models, Non-linear Non linear Models Non-linear Model

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