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Re: problem with rif:iri definition in DTB

From: Axel Polleres <axel.polleres@deri.org>
Date: Mon, 18 May 2009 16:44:00 +0100
Message-ID: <4A118240.1010206@deri.org>
To: kifer@cs.sunysb.edu
CC: RIF WG Public list <public-rif-wg@w3.org>
Michael Kifer wrote:
> (This came up in Stella's report on FLD, but the problem is in DTB.)
> 
> There is a statement in DTB Sec 1.2.1:
> 
> * rif:iri (http://www.w3.org/2007/rif#iri, ... ... ... A rif:iri
> constant must be interpreted as a reference to one and the same
> object regardless of the context in which that constant occurs.
>
> This last sentence is too informal. Worse, as far as I can see, it is
> incompatible with first-order semantics. Obviously, no constant can
> be interpreted by one and the same object in all possible worlds
> (semantic structures) unless you impose restrictions, like we did for
> data types. But I don't even think there is a reasonable set of
> restrictions that is agreeable to everyone.

Right, I don't remember when/why this was added, but I'd be fine to drop 
that last sentence. Would that do?

Axel


-- 
Dr. Axel Polleres
Digital Enterprise Research Institute, National University of Ireland,
Galway
email: axel.polleres@deri.org  url: http://www.polleres.net/
Received on Monday, 18 May 2009 15:44:42 GMT

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