Sun, 24 Apr 2016 20:37:24 +0200 wenzelm within a proof body context, undeclared frees are like global constants;
Sun, 24 Apr 2016 20:29:49 +0200 wenzelm clarified modules;
Fri, 22 Apr 2016 15:34:37 +0200 nipkow added "balanced" predicate
Wed, 20 Apr 2016 16:50:20 +0200 Rene Thiemann fixed code equation for pdivmod, added improved code equation for pseudo_mod
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