Wed, 03 Sep 2008 17:47:30 +0200 wenzelm Sign.declare_const: Name.binding;
Wed, 03 Sep 2008 12:11:28 +0200 nipkow removed ex/Puzzle
Wed, 03 Sep 2008 11:44:52 +0200 wenzelm added qualified: string -> binding -> binding;
Wed, 03 Sep 2008 11:44:48 +0200 wenzelm Name.qualified;
Wed, 03 Sep 2008 11:27:15 +0200 wenzelm theorem dependency hook: check previous state;
Wed, 03 Sep 2008 11:26:59 +0200 wenzelm added pos_of;
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