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Article #478

3-state algebra

#478
From: ....What Is?....
Date: Sat, 22 Jun 1991 04:58
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Has anyone done for "yes, no, unknown" what Boolean algebra did for
"yes, no"?  I'm writing a Prolog-like engine for "yes, no, unknown"
and would like to avoid reinventing the wheel on this as much as I
can.

Please mail answers, I will post a summary.

Thanks in advance!

If this has been discussed thoroughly already, well, we all gotta
learn it somehow... :)

Steve Boswell
whatis@gnu.ai.mit.edu
whatis@ucsd.edu
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From: sboswell@sdcc13.ucsd.edu (....What Is?....)
Newsgroups: sci.logic,sci.math,comp.misc
Subject: 3-state algebra
Message-ID: <20878@sdcc6.ucsd.edu>
Date: 22 Jun 91 04:58:34 GMT
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Followup-To: sci.logic
Organization: UC San Diego - 1991 "Wannabe Real College" finalist
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