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instance definition def or abbrev

setoid

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formal statement (Lean)

  77instance setoid : Setoid PreRat := ⟨ratRel, ratRel_refl, ratRel_symm, ratRel_trans⟩

proof body

Definition body.

  78
  79/-! ## 2. The Type of Logic-Native Rationals -/
  80
  81/-- `LogicRat` is the field of fractions of `LogicInt`. -/

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