Re: [isabelle] size setup for HOL/Library/Finite_Map (fmap)

> You need a function size_fmap that takes a size function for every type
> argument, even the dead ones. So it should have the type
>   ('a => nat) => ('b => nat) => ('a, 'b) fmap => nat
> Typically, the instantiation for the type class then puts "%_. 0" for
> the arguments.

This is an oversight â I'll try to add this to the theory over the next
couple of days.


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