5 lines
229 B
Text
5 lines
229 B
Text
inductive Foo (f: Fin n): Nat → Prop
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| mk: Foo f f.val
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theorem foo {f: Fin n}: Foo f (no_index f.val) := .mk
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example (hf: f < n): Foo ⟨f, hf⟩ f := by simp only [foo]
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example (f: Fin n): Foo f f.val := by simp only [foo]
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