2014-01-05 20:05:08 +00:00
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import Int.
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variable list : Type -> Type
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variable nil {A : Type} : list A
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variable cons {A : Type} (head : A) (tail : list A) : list A
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variables a b : Int
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variables n m : Nat
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definition l1 : list Int := cons a (cons b (cons n nil))
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definition l2 : list Int := cons a (cons n (cons b nil))
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check cons a (cons b (cons n nil))
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