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	<title>Comments on: Complexity Zoo</title>
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		<title>By: Walt</title>
		<link>http://www.arsmathematica.net/2006/02/20/complexity-zoo/#comment-475</link>
		<dc:creator><![CDATA[Walt]]></dc:creator>
		<pubDate>Sat, 25 Feb 2006 03:49:58 +0000</pubDate>
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		<description><![CDATA[There are really 4000 known complexity classes?]]></description>
		<content:encoded><![CDATA[<p>There are really 4000 known complexity classes?</p>
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		<title>By: PeterMcB</title>
		<link>http://www.arsmathematica.net/2006/02/20/complexity-zoo/#comment-474</link>
		<dc:creator><![CDATA[PeterMcB]]></dc:creator>
		<pubDate>Wed, 22 Feb 2006 11:14:48 +0000</pubDate>
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		<description><![CDATA[I mentioned this to my colleagues in Computer Science working in computational complexity, and one estimate was that the Complexity Zoo has only about 10% of all the complexity classes so far identified in the literature!!!]]></description>
		<content:encoded><![CDATA[<p>I mentioned this to my colleagues in Computer Science working in computational complexity, and one estimate was that the Complexity Zoo has only about 10% of all the complexity classes so far identified in the literature!!!</p>
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