9 lines
222 B
Text
9 lines
222 B
Text
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SetOption pp::implicit true.
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SetOption pp::colors false.
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Variable N : Type.
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Definition T (a : N) (f : _ -> _) (H : f a == a) : f (f _) == f _ :=
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SubstP (fun x : N, f (f a) == _) (Refl (f (f _))) H.
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Show Environment 1.
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