| Sun, 02 Nov 2014 16:39:54 +0100 | 
wenzelm | 
modernized header;
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| Thu, 15 Mar 2012 17:38:05 +0000 | 
paulson | 
beautification and structured proofs
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| Tue, 06 Mar 2012 17:01:37 +0000 | 
paulson | 
More mathematical symbols for ZF examples
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| Sun, 20 Nov 2011 20:15:02 +0100 | 
wenzelm | 
eliminated obsolete "standard";
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| Fri, 18 Feb 2011 17:03:30 +0100 | 
wenzelm | 
modernized specifications;
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| Sat, 17 Oct 2009 14:43:18 +0200 | 
wenzelm | 
eliminated hard tabulators, guessing at each author's individual tab-width;
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| Sun, 07 Oct 2007 21:19:31 +0200 | 
wenzelm | 
modernized specifications;
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| Sun, 07 Oct 2007 15:49:25 +0200 | 
wenzelm | 
replaced some 'translations' by 'abbreviation';
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| Fri, 17 Jun 2005 16:12:49 +0200 | 
haftmann | 
migrated theory headers to new format
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| Thu, 10 Jul 2003 17:14:41 +0200 | 
paulson | 
Changed many Intersection rules from i:I to I~=0 to avoid introducing a new
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| Mon, 30 Jun 2003 18:15:51 +0200 | 
paulson | 
Removal of UNITY/UNITYMisc, moving its theorems elsewhere.
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| Fri, 27 Jun 2003 13:15:40 +0200 | 
paulson | 
Conversion of AllocBase to new-style
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| Fri, 30 May 2003 11:44:29 +0200 | 
paulson | 
getting ZF/UNITY working again
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| Wed, 28 May 2003 18:13:41 +0200 | 
paulson | 
some new ZF/UNITY material from Sidi Ehmety
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