Thu, 07 Jun 2007 11:25:27 +0200 nipkow somebody elses problem fixed
Thu, 07 Jun 2007 11:25:05 +0200 nipkow filter syntax change
Thu, 07 Jun 2007 04:33:15 +0200 huffman remove redundant lemmas
Thu, 07 Jun 2007 03:45:56 +0200 huffman remove references to preal-specific theorems
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