Wed, 27 Jun 2007 11:06:43 +0200 nipkow *** empty log message ***
Tue, 26 Jun 2007 18:32:53 +0200 paulson updated for metis method
Tue, 26 Jun 2007 18:32:24 +0200 paulson recoded
Tue, 26 Jun 2007 18:28:40 +0200 paulson simplified
Tue, 26 Jun 2007 15:48:24 +0200 paulson completed some references
Tue, 26 Jun 2007 15:48:09 +0200 paulson changes for type class ring_no_zero_divisors
Tue, 26 Jun 2007 13:02:28 +0200 nipkow *** empty log message ***
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