Hidden Attractors

System Leonov (2011) — hidden Chua hidden limit cycle Sprott A (no equilibria) Thomas cyclically sym. Lorenz (self-excited ref.) Trajectories 15 Speed 1.0 Point size 1.5 Trail fade 0.02 Reset Trajectories Toggle Rotation

Hidden attractors (Leonov & Kuznetsov, 2011): chaotic attractors NOT connected to any unstable equilibrium. Unlike Lorenz, you cannot find them by following an unstable manifold — they must be discovered by special algorithms. Sprott A has no equilibria at all.