On 24 February 2015 at 15:30, Matt Oliveri <[email protected]> wrote:
>
> upcast1_1to2 f = \x y.(f x) y
> downforce2to1_1 f = \x.\y.f x y


Why is that necessary?

If this is true then you cannot go up or down, so there is not point in
arty-abstract functions at all, as you cannot alter the arity without
inserting lambdas.

Keean.
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