Content stub — prose, diagrams, and Lean 4 exercises to be written.
This week covers: F(n+1)/F(n) → φ. Rate of approach. η weighting for n=2. Chapter ch9-phi.html as primary text.
Primary chapter references from book/: ch9-phi.html
-- dm³ 101 · Week 10 · Lean 4 Lab -- Operator: φ (≈ 1.618 Fibonacci) -- TODO: fill in theorems and exercises -- stub example : True := trivial