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def definition def or abbrev

coshEnhancement

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formal statement (Lean)

  59def coshEnhancement (t : ℝ) : ℝ :=

proof body

Definition body.

  60  if t = 0 then 1 else 2 * (Real.cosh t - 1) / t ^ 2
  61
  62/-- The perturbative (quadratic) cost: t²/2. -/

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