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Re: An inconsistency or not?

From: Chris Purcell <cjp39@cam.ac.uk>
Date: Thu, 31 Mar 2005 18:33:27 +0100
Message-Id: <95d9d4e8304dc630466fab3aa729d5ea@cam.ac.uk>
Cc: semantic-web@w3.org
To: Denny Vrandecic <dvr@aifb.uni-karlsruhe.de>

> That's wrong.
> A owl:intersectionOf [B, C, D].
> A owl:equivalentClass B.
>
> can be simplified to
>
> B owl:intersectionOf [C, D].
> A owl:equivalentClass B.

Unfortunately, this is not true:

A = B = { x }; C = D = { x, y }

intersect(B,C,D) = { x } = A
but intersect(C,D) = { x, y } != B

Chris
Received on Thursday, 31 March 2005 17:33:30 GMT

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