A double-scroll attractor is a strange attractor with two spiral-shaped lobes in phase space. A trajectory on the attractor can make several turns within either lobe before passing to the other. Matsumoto et al. (1985) analyzed the double-scroll attractor of Chua's circuit equations.
The figure shows the 
-projection of a numerically integrated trajectory of Chua's
circuit equations with 
, 
, 
,
and 
. The initial state is 
, and the plotted portion uses dimensionless
time 
.
