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theorem proved term proof

scale_at_two

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formal statement (Lean)

  90theorem scale_at_two : phiLadderScale 2 = phi^2 := by

proof body

Term-mode proof.

  91  unfold phiLadderScale
  92  norm_cast
  93
  94/-- **THEOREM**: φ-ladder gives exponential hierarchy (φ^n > 1 for n > 0). -/

depends on (2)

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