Thu, 26 Jun 2008 10:07:01 +0200 haftmann established Plain theory and image
Thu, 26 Jun 2008 10:06:54 +0200 haftmann added dummy citiation
Thu, 26 Jun 2008 10:06:53 +0200 haftmann dropped recdef
Thu, 26 Jun 2008 10:06:51 +0200 haftmann class theory name lookup improved
Wed, 25 Jun 2008 22:11:17 +0200 wenzelm modernized specifications;
Wed, 25 Jun 2008 22:01:35 +0200 wenzelm tuned proofs;
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