12 lines
265 B
Text
12 lines
265 B
Text
inductive Foo (n : Nat) : Type
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| nil : Foo n
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| cons (s: Foo n): Foo n
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namespace Foo
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@[simp] def bar: {n: Nat} → Foo n → Foo n → Bool
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| n+1, cons a, cons b => bar a b
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| _, _, _ => true
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example: bar (n:=n+1) nil nil = true := by
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simp only [bar]
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