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class definition def or abbrev

CostFunctionalAxioms

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formal statement (Lean)

  82class CostFunctionalAxioms (F : ℝ → ℝ) extends
  83  Normalization F, Composition F, Calibration F : Prop
  84
  85/-! ## The Canonical Cost Functional J -/
  86
  87/-- The canonical cost functional:
  88  J(x) = ½(x + x⁻¹) - 1
  89
  90This is the **unique** solution to the three axioms (proven below). -/

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