- From: Richard Fikes <fikes@KSL.Stanford.EDU>
- Date: Fri, 14 Sep 2001 14:44:28 -0700
- To: Richard Waldinger <waldinger@AI.SRI.COM>
- CC: "www-rdf-logic@w3.org" <www-rdf-logic@w3.org>, Pat Hayes <phayes@ai.uwf.edu>
> I still don't think you need to change the definition of
> NoRepeatsList to have a second argument, the length of the list.
I agree. Your proposal to have an axiom saying that if ?r is a
NoRepeatsList and ?x is not an element of ?r then "(cons ?x ?r)" is a
NoRepeatsList is a more elegant way of taking care of the list existence
problem. In KIF, that axiom would be:
(=> (and (NoRepeatsList ?r) (not (item ?r ?x)))
(NoRepeatsList (cons ?x ?r)))
Richard
Received on Friday, 14 September 2001 17:44:40 UTC