A dynamical system in which the phase space volume contracts along a trajectory. This means that the generalized divergence is less than zero,

where Einstein summation has been used.

A dynamical system in which the phase space volume contracts along a trajectory. This means that the generalized divergence is less than zero,

where Einstein summation has been used.

Weisstein, Eric W. "Dissipative System."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/DissipativeSystem.html