- From: Bijan Parsia <bparsia@cs.man.ac.uk>
- Date: Thu, 17 Aug 2006 11:27:32 +0100
- To: Pat Hayes <phayes@ihmc.us>
- Cc: RDF Data Access Working Group <public-rdf-dawg@w3.org>
On Aug 17, 2006, at 10:29 AM, Pat Hayes wrote: [snip] >> (I believe that RDF graphs under simple interpretations have the >> "one element" model property. If a RDF graph has a simple >> interpretation that is a model (and they all do) then it has a >> model with a single element. > > The same is true for any ground set of facts without negation, such > as all DBs. [snip] Except DBs typically *do* have negation, in the form of the UNA. (UNA can be expressed as pairwise inequalities.) So, in fact, almost no DBs. Cheers, Bijan.
Received on Thursday, 17 August 2006 10:27:56 UTC