Goodwin: dx/dt=a_g/(K^n+z^n)−b_g·x; symmetric SS s·(s^n+1)=1; n=1: s=(√5−1)/2 (golden)

Layer 3 — Biologyin the chronobiology subtree

Sympy-exact symbolic witness of the Goodwin oscillator canonical form, x-nullcline, symmetric-case steady-state equation, and golden-ratio anchor at n=1. Setup: x, y, z, K, n, a_g, b_g — all positive symbols. mRNA ODE: dx/dt = a_g/(K^n +…

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