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	<title>Broerse Blog &#187; nRing DB</title>
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		<title>True False Unknown</title>
		<link>http://www.broerse.net/wordpress/2007/11/25/true-false-unknown/</link>
		<comments>http://www.broerse.net/wordpress/2007/11/25/true-false-unknown/#comments</comments>
		<pubDate>Sun, 25 Nov 2007 21:39:43 +0000</pubDate>
		<dc:creator>Martin</dc:creator>
				<category><![CDATA[nRing DB]]></category>
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		<description><![CDATA[I saw this Boolean in MuPAD. I was thinking till now you can store everything in my nRing database with just &#8220;True/1&#8243; of &#8220;False/0&#8243;. There is a problem with:  &#8220;This statement is false&#8221; The result can&#8217;t be &#8220;True&#8221; but it is also not &#8220;False&#8221;. What is it? Perhaps &#8220;Unknown&#8221; does not do it any justice. I had a glass [...]]]></description>
			<content:encoded><![CDATA[<p>I saw <a target="_blank" href="http://www.mupad.de/support/doc/40/en/stdlib/consbool.html">this</a> Boolean in MuPAD. I was thinking till now you can store everything in my nRing database with just &#8220;True/1&#8243; of &#8220;False/0&#8243;. There is a problem with:</p>
<p> <strong>&#8220;This statement is false&#8221;</strong></p>
<p>The result can&#8217;t be &#8220;True&#8221; but it is also not &#8220;False&#8221;. What is it? Perhaps &#8220;Unknown&#8221; does not do it any justice. I had a glass of wine. Perhaps I need to drink more. </p>
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