Sat, 20 Jan 2001 00:32:56 +0100 wenzelm added Library/Ring_and_Field_Example.thy;
Sat, 20 Jan 2001 00:01:40 +0100 wenzelm *** empty log message ***
Fri, 19 Jan 2001 23:53:07 +0100 wenzelm added HOL/Library/Nested_Environment.thy;
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