Created
October 9, 2019 19:57
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| (.) :: (b -> c) -> (a -> b ) -> (a -> c) | |
| (,) :: d -> (e -> (d,e)) | |
| so a ~ d, and b ~ e -> (d,e), and | |
| \x -> x . (,) :: ((e -> (d,e)) -> c) -> (d -> c) |
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