8 lines
155 B
Text
8 lines
155 B
Text
@[grind =] def f : Nat → Nat
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| 0 => 0
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| n + 1 => f n
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theorem foo (n : Nat) : f n = 0 := by
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match n with
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| 0 => grind
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| n + 1 => grind [foo n]
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