Sat, 30 Jun 2007 17:30:10 +0200 obua added ordered_ring and ordered_semiring
Fri, 29 Jun 2007 21:23:05 +0200 haftmann tuned arithmetic modules
Fri, 29 Jun 2007 18:21:25 +0200 paulson bug fixes to proof reconstruction
Fri, 29 Jun 2007 16:05:00 +0200 haftmann dropped local cg cmd
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