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def definition def or abbrev

NonContradictionOn

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formal statement (Lean)

  69def NonContradictionOn [LT K] [Zero K] (C : ComparisonOperatorOn K) : Prop :=

proof body

Definition body.

  70  ∀ x y : K, 0 < x → 0 < y → C x y = C y x
  71
  72/-- Scale invariance, generic field version. -/

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