W3C home > Mailing lists > Public > www-webont-wg@w3.org > November 2002

ISSUE 15.24 if or iff - current state - propose to close

From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Date: Mon, 18 Nov 2002 14:46:15 +0100
To: "Jim Hendler" <hendler@cs.umd.edu>, "webont" <www-webont-wg@w3.org>

Jim wrote:

> Issue 15.24 if or iff properties
> (chair's note: Is this issue still alive?  If so, can someone propose a

My belief on the current state:

The RDF semantics gives rdfs:range and rdfs:domain "if" semantics.
The OWL semantics gives both of these and all the other property properties
"iff" semantics.

The RDF semantics explicitly permits OWL to make that change. "Semantic
extensions MAY strengthen the domain and range semantic conditions"

- the two semantics together do propose a solution to this issue that meets
(my) preference of uniformity.

The desire for uniformity seemed to be the group consensus, I don't believe
there was a consensus on whether if or iff was better. Given that we have
text with "iff" I propose that we accept that.


I propose that Issue 15.24 if or iff is addressed by the OWL Semantics
I propose that we close this issue.

(Note there already are plenty of test cases, I don't think we need any

Received on Monday, 18 November 2002 08:46:33 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 23:04:38 UTC