W3C home > Mailing lists > Public > www-rdf-interest@w3.org > January 2002

RE: extend rdfs:Class & rdf:Property

From: Ron Daniel <rdaniel@interwoven.com>
Date: Thu, 10 Jan 2002 08:21:33 -0800
To: "Alexaki Sofia" <alexaki@ics.forth.gr>, <www-rdf-interest@w3.org>
Message-ID: <EMEKICCGFEKJFGKMFLEPEEKIEFAA.rdaniel@interwoven.com>
A meta-comment...

Please be aware that using three x characters in a
row means your email message will be filtered out by simple
junk mail filters. You probably want to use single X and
Y characters for your variable names.

Ron 

> -----Original Message-----
> From: www-rdf-interest-request@w3.org
> [mailto:www-rdf-interest-request@w3.org]On Behalf Of Alexaki Sofia
> Sent: Thursday, January 10, 2002 7:49 AM
> To: www-rdf-interest@w3.org
> Subject: extend rdfs:Class & rdf:Property
> 
> 
> Hello,
> 
> The 11th rule in the RDF Model Theory which states that if
> xxx rdfs:subClassOf yyy   and aaa rdf:type xxx .
> then aaa rdf:type yyy
> does this rule applies if xxx is subclass of  rdfs:Class?
> 
> More precisely, if the following facts are stated:
> the  class MyClass is subClassOf rdfs:Class and C1 is instance of  MyClass
> i.e.,
> <rdfs:Class rdf:ID="MyClass">
> <rdfs:subClassOf
>   rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
> </rdfs:Class>
> 
> <MyClass rdf:ID="C1"/>
> 
> can I infer that C1 is a class? Or it is should be explicitly stated in
> the RDF file that C1 is instanceof rdfs:Class?
> 
> Repsectively, if I define a class MyProperty as subclass of rdf:Property
> and P1 is instance of MyProperty i.e.,
> 
> <rdfs:Class rdf:ID="MyProperty">
> <rdfs:subClassOf rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
> </rdfs:Class>
> 
> <MyProperty rdf:ID="P1"/>
> can I infer that P1 is a property?
> 
> Regards,
> Sofia Alexaki
> 
Received on Thursday, 10 January 2002 11:37:00 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Monday, 7 December 2009 10:51:52 GMT