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Topic: PROLOG does SO have NOT() !!
Replies: 3   Last Post: Nov 20, 2012 3:33 PM

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Frederick Williams

Posts: 2,164
Registered: 10/4/10
Re: PROLOG does SO have NOT() !!
Posted: Nov 20, 2012 8:52 AM
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Graham Cooper wrote:
>
> Exactly the same way we use not().
>
> Failure to return a result can be programmed for ANY PREDICATE
>
> *WITH A FINITE DOMAIN*
>
> [...]
>
> You can PROGRAM the predicate NOT(...)
>
> for any predicate with a FINITE SET OF ARGUMENT VALUES!


Is this "negation as failure"?

--
When a true genius appears in the world, you may know him by
this sign, that the dunces are all in confederacy against him.
Jonathan Swift: Thoughts on Various Subjects, Moral and Diverting



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