On Friday 30 Mar 2012 11:14:39 Ralf Hemmecke wrote:
> Have you noticed that your program should actually *not* even compile?
> Writing
>    FiniteGraph(SetCategory)
> is wrong, since the argument of FiniteGraph has to be
> "of type SetCategory" and not SetCategory itself.

Not until you pointed it out. What I am looking for is somthing that
will return true for:

DirectedGraph(String)
FunctionGraph(String)
DirectedGraph(NNI)
FunctionGraph(DoubleFloat)
DirectedGraph(DirectedGraph(String))
... and so on

that is any domain of the form

x(y)

where x is an instance of FiniteGraph
and y is an instance of SetCategory

Martin

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