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structure definition def or abbrev

IsInitial

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formal statement (Lean)

  58structure IsInitial (A : PeanoObject) where
  59  lift : ∀ B : PeanoObject, Hom A B
  60  uniq : ∀ (B : PeanoObject) (f g : Hom A B), f.toFun = g.toFun
  61
  62end PeanoObject
  63
  64/-- The arithmetic object forced by a Law-of-Logic realization. -/

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