W3C home > Mailing lists > Public > w3c-rdfcore-wg@w3.org > December 2002

Re: pressing question about containermembershipproperty syntax

From: Brian McBride <bwm@hplb.hpl.hp.com>
Date: Sat, 21 Dec 2002 11:18:55 +0000
Message-Id: <5.1.0.14.0.20021221111426.01f86aa8@0-mail-1.hpl.hp.com>
To: pat hayes <phayes@ai.uwf.edu>, w3c-rdfcore-wg@w3.org

My take on this:

The namespace

   http://www.w3.org/1999/02/22-rdf-syntax-ns#

is controlled by W3C.  We can say that it does contain the name _:1 and it 
does not contain the name _:01.  I have never seen it suggested before that 
_:01 was legal.  I suggest that we make it clear in the vocabulary document 
that it is not.

Brian

At 12:45 20/12/2002 -0600, pat hayes wrote:

>Guys, I have an urgent question. In a recent email, Peter P-S claimed the 
>following:
>
>>It appears to me that there is such a distinction in RDF graphs, and,
>>moreover, both
>>
>>   { < "http://www.w3.org/1999/02/22-rdf-syntax-ns#_1"
>>       "http://www.w3.org/1999/02/22-rdf-syntax-ns#type"
>>       "http://www.w3.org/2001/01/rdf-schema#ContainerMembershipProperty" > }
>>
>>and
>>
>>   { < "http://www.w3.org/1999/02/22-rdf-syntax-ns#_01"
>>       "http://www.w3.org/1999/02/22-rdf-syntax-ns#type"
>>       "http://www.w3.org/2001/01/rdf-schema#ContainerMembershipProperty" > }
>>
>>are legal RDF graphs, only one of which is RDFS-entailed by the empty RDF
>>graph.
>
>If Peter is right then we need to fix something; that is, either leading 
>zeros in CMP names should be syntactically illegal, or else I need to 
>tweak the RDFS semantics to make those CMP syntactic forms have their 
>obvious meaning.
>
>I don't know for sure, however, if they are syntactically legal or not. 
>Can anyone answer that question, please?
>
>Thanks.
>
>Pat
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Received on Saturday, 21 December 2002 06:18:04 EST

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