Sat, 20 Jan 2001 00:34:46 +0100 instance int :: ordered_ring moved to Ring_and_Field_Example, because
wenzelm [Sat, 20 Jan 2001 00:34:46 +0100] rev 10946
instance int :: ordered_ring moved to Ring_and_Field_Example, because it changes the way that int expressions get simplified, violating the strict library principle (cf. README.html);
Sat, 20 Jan 2001 00:32:56 +0100 added Library/Ring_and_Field_Example.thy;
wenzelm [Sat, 20 Jan 2001 00:32:56 +0100] rev 10945
added Library/Ring_and_Field_Example.thy;
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