Hi Brian > Every time I use the overloaded constants "top" and "bot" (defined in > Orderings.thy), Isabelle prints them out as "top_class.top" and > "bot_class.bot", instead of just "top" and "bot". I find this > annoying, so I tried to find out the reason for this.
> class top = preorder +
> fixes top :: 'a
> assumes top_greatest [simp]: "x \<le> top"
>
> class bot = preorder +
> fixes bot :: 'a
> assumes bot_least [simp]: "bot \<le> x"
The fact that both class predicate and class operation have the same
base name is indeed confusing. Meanwhile it should be possible to
insert a non-mandatory qualifier into the name binding of the class
predicate, e.g. "pred", or even "class". Any objections?
Florian
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