Lorenz attractor

Lorenz '63

dx/dt = σ (y − x)
dy/dt = x (ρ − z) − y
dz/dt = x y − β z

classical: σ = 10, ρ = 28, β = 8/3
Hopf bifurcation at ρ ≈ 24.74
λ₁ ≈ 0.906, Kaplan-Yorke dim ≈ 2.06