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theorem proved term proof

trajectory_succ

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formal statement (Lean)

  97theorem trajectory_succ (f : ℝ → ℝ) (r : ℝ) (n : ℕ) :
  98    trajectory f r (n + 1) = f (trajectory f r n) := rfl

proof body

Term-mode proof.

  99
 100/-! ## §3. Equilibrium fixed point -/
 101

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