Dynamical system

Dissipative system

A dissipative system is a dynamical system which is contracting for all but finitely many points, i.e. nearly all infinitesimal balls of initial conditions shrink over time.1 #m/def/dynamics A distinct but related class of system is the Conservative system.

Characterization

Differential system

For a differential system the evolution of an infinitesimal volume follows

and dissipative dynamics is characterised by .

Iterated map

For an Iterated map the evolution of an infinitesimal volume follows

and again dissipative dynamics is characterised by .

Properties

The phase space of a dissipative system is populated by attractors and may be divided into basins of attraction.


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Footnotes

  1. 2022. Nonlinear Dynamics: A Concise Introduction Interlaced with Code, §1.5, pp. 12–13