9 lines
180 B
Text
9 lines
180 B
Text
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definition f : nat → nat := sorry
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definition g (a : nat) := f a
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lemma gax [simp] : ∀ a, g a = 0 := sorry
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attribute g [reducible]
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example (a : nat) : f (a + a) = 0 :=
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by simp
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