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

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

Nonlinear optics -- Materials -- Congresses : Nonlinear optical materials : principles and applications : Varenna on Lake Como, Villa Monastero, 20-30 July 1993 / edited by V. Degiorgio and C. Flytzanis

Nonlinear optics -- Mathematics : Laser beam propagation in nonlinear optical media / Shekhar Guha and Leonel P. Gonzalez, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, USA

Nonlinear oscillations -- Congresses : Mathematics of continuous and discrete dynamical systems : AMS Special Session in Honor of Ronald Mickens's 70th Birthday, Nonstandard Finite-Difference Discretizations and Nonlinear Oscillations, January 9-10, 2013, San Diego, CA / Abba B. Gumel, editor