6 lines
204 B
Text
6 lines
204 B
Text
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open nat
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definition lt_of_succ : ∀ {a b : nat}, succ a < b → a < b,
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lt_of_succ (lt.base (succ a)) := lt.trans (lt.base a) (lt.base (succ a)),
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lt_of_succ (lt.step h) := lt.step (lt_of_succ h)
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