> In OpenAxiom, one can use @ to restrict the set of mappings, e.g.
> 
>    [EMAIL PROTECTED](INT,NNI,INT)
> 
> selects the * as default-supplied by ABELGRP.

Good to know.

> In fact, I don't see what would be wrong with
>    [EMAIL PROTECTED](INT,INT,INT)
> or
>    [EMAIL PROTECTED](String,String,String)

Nothing, but your intention with

 >>>   forall(T: Type) .
 >>>     Associative(Modemap(T,T,T): op): Category == with nil

somehow was to remove the need to say anything about T. Now in Modemap 
you mention it even 3 times.

Well, I agree that is a rather pathological case, but somehow I still 
fail to see the big advantage.

I assume you want that

   forall(T: Type)

is implicitly assumed by the compiler. Did I understand that correctly?
Is there a similar simple thing for

   forall(T: Ring)
     ...

? Currently, I only see that you intend to remove the need for signature 
declarations in a package called "forall". Could you elaborate?

Ralf

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