- From: Jos de Bruijn <debruijn@inf.unibz.it>
- Date: Fri, 26 Sep 2008 16:00:21 -0400
- To: Michael Kifer <kifer@cs.sunysb.edu>
- CC: RIF WG <public-rif-wg@w3.org>
Received on Friday, 26 September 2008 20:01:26 UTC
It was my test case, and you missed the p(?x) in the body, so the rule
is not inconsistent.
Jos
Michael Kifer wrote:
> This is regarding the rule that kept bugging me:
>
> 1=2 :- AND(p(?X) isNotInt(?X) isNotString(?X)).
>
> It seems this is inconsistent in the presence of other data types, such as
> xsd:date. This is because this implies
>
> Forall ?X OR(isInt(?X) isString(?X))
>
> Since there are things that are disjoint from ints and strs (e.g., dates,
> time), it follows that the above rule is inconsistent.
>
> To make the above stick, all data types must be mentioned in the body.
>
>
> --michael
>
--
debruijn@inf.unibz.it
Jos de Bruijn, http://www.debruijn.net/
----------------------------------------------
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Received on Friday, 26 September 2008 20:01:26 UTC