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14 lines
240 B
Idris
14 lines
240 B
Idris
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data Fin : Nat -> Type where
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FZ : Fin (S k)
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FS : Fin k -> Fin (S k)
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noFinZ : Fin Z -> Void
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noFinZ FZ impossible
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noFinZ (FS k) impossible
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noFinZ' : Fin Z -> Void
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noFinZ' x impossible
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noEmpty : Void -> Fin Z
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noEmpty t impossible
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