Logistic Growth with Delay

Hutchinson equation: dx/dt = rx(1 − x(t−τ)/K)
Increasing delay drives oscillations → chaos


Parameters

Time: 0
x(t):
r·τ:
Regime:
r·τ < π/2: stable equilibrium
r·τ = π/2 ≈ 1.57: Hopf bifurcation
r·τ > π/2: sustained oscillations
r·τ ≫ 1: complex / chaotic