Tue, 22 May 2012 16:59:27 +0200 added "ext_cong_neq" lemma (not used yet); tuning
blanchet [Tue, 22 May 2012 16:59:27 +0200] rev 47953
added "ext_cong_neq" lemma (not used yet); tuning
Mon, 21 May 2012 16:37:28 +0200 use quot_del instead of ML code in Rat.thy
kuncar [Mon, 21 May 2012 16:37:28 +0200] rev 47952
use quot_del instead of ML code in Rat.thy
Mon, 21 May 2012 16:36:48 +0200 quot_del attribute, it allows us to deregister quotient types
kuncar [Mon, 21 May 2012 16:36:48 +0200] rev 47951
quot_del attribute, it allows us to deregister quotient types
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