W3C home > Mailing lists > Public > www-xml-schema-comments@w3.org > January to March 2003

equality clarification should be requirement

From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Date: Wed, 22 Jan 2003 19:18:24 +0000
Message-ID: <3E2EEE80.1070405@hpl.hp.com>
To: www-xml-schema-comments@w3.org

I read in RQ-24


that you hope (but do not intend) to
"Distinguish our identity relation from the mathematical relation of 
quantitative equality."

I refer you again to my study of equality of XML Schema datatypes

equality is a fundamental issue in the use of XML Schema datatypes in the 
semantic web, particularly OWL, and to a lesser extent RDF.

I believe that predetermining that the desiderata is to distinguish rather 
than to fully identify the two concepts is a mistake.

Moreover, clarity here is needed by the OWL community particularly, and 
this part of RQ-24 should be elevated to a requirement.

"Clarify the relationship between our identify relation and the 
mathematical relation of quantitative equality."

Except for one sentence XML Schema 1.0 is clear that they are the same 
relationship. A U-turn will need explanation.

Jeremy Carroll
(as an individual)
Received on Wednesday, 22 January 2003 14:18:36 UTC

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