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theorem proved term proof

stepCost_nonneg

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formal statement (Lean)

  41theorem stepCost_nonneg {r : ℝ} (hr : 0 < r) : 0 ≤ stepCost r :=

proof body

Term-mode proof.

  42  Cost.Jcost_nonneg hr
  43
  44/-- JI reference cost (exact integer ratio: J-cost zero). -/

depends on (9)

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