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RE: LANG: Proposal to close ontology versioning (ISSUE 5.14)

From: Smith, Michael K <michael.smith@eds.com>
Date: Thu, 5 Dec 2002 17:48:02 -0600
Message-ID: <B8E84F4D9F65D411803500508BE3221412590AC3@USPLM207>
To: pat hayes <phayes@ai.uwf.edu>, "Smith, Michael K" <michael.smith@eds.com>
Cc: www-webont-wg@w3.org

Last time I looked, in a propositonal logic A and B are boolean 
variables that can be True or False.  Maybe it has been too long.

-----Original Message-----
From: pat hayes [mailto:phayes@ai.uwf.edu]
Sent: Thursday, December 05, 2002 4:58 PM
To: Smith, Michael K
Cc: www-webont-wg@w3.org
Subject: RE: LANG: Proposal to close ontology versioning (ISSUE 5.14)


>Propositionally, A and B is consistent with A.

Not if B is inconsistent with A, at least in any sense of 
'consistent' I am aware of. (It might be possible to tweak a linear 
logic to have the property you claim; I'm not enough of a 
linear-logic maven to know for sure. I doubt it, though.)

>And in the particular case that Jeff was proposing, we might
>as well think propositionally.

I *am* thinking propositionally, which is largely why I think that we 
are building a crock with owl:imports. I don't think it makes 
propositional sense.

Pat


>- Mike
>
>-----Original Message-----
>From: pat hayes [mailto:phayes@ai.uwf.edu]
>Sent: Thursday, December 05, 2002 11:43 AM
>To: Smith, Michael K
>Cc: www-webont-wg@w3.org
>Subject: RE: LANG: Proposal to close ontology versioning (ISSUE 5.14)
>
>
>>Normally I think of 'A and B' as being consistent with 'A'.
>
>so 'A and not A' is consistent with A ??
>
>Pat
>
>
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Received on Thursday, 5 December 2002 18:48:19 GMT

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