Lorenz63 Model $$\frac{dx}{dt} = \sigma(y-x)$$ $$\frac{dy}{dt} = x(\rho-z)-y$$ $$\frac{dz}{dt} = xy-\beta z$$ With parameters: $ ρ = 28, σ = 10, β = 8 / 3$, the system is a chaos.