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def definition def or abbrev

IdentityOn

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formal statement (Lean)

  65def IdentityOn [Zero K] [LT K] (C : ComparisonOperatorOn K) : Prop :=

proof body

Definition body.

  66  ∀ x : K, 0 < x → C x x = 0
  67
  68/-- Non-contradiction, generic field version. -/

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