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def definition def or abbrev

SatisfiesRCL

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formal statement (Lean)

  92def SatisfiesRCL (F : ℝ → ℝ) : Prop :=

proof body

Definition body.

  93  ∀ x y : ℝ, 0 < x → 0 < y →
  94    F (x * y) + F (x / y) = 2 * F x * F y + 2 * F x + 2 * F y
  95
  96/-- **THEOREM: J satisfies the RCL.**
  97    This is the foundational identity — everything else follows. -/

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depends on (9)

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