Thu, 10 Dec 2009 18:28:30 +0100 added Larry's theory; introduced lemma equivpI; added something to the TODO about error messages
Christian Urban <urbanc@in.tum.de> [Thu, 10 Dec 2009 18:28:30 +0100] rev 700
added Larry's theory; introduced lemma equivpI; added something to the TODO about error messages
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