nipkow [Tue, 17 Oct 2000 16:59:02 +0200] rev 10237
*** empty log message ***
nipkow [Tue, 17 Oct 2000 13:28:57 +0200] rev 10236
*** empty log message ***
paulson [Tue, 17 Oct 2000 10:45:51 +0200] rev 10235
renaming of contrapos rules
paulson [Tue, 17 Oct 2000 10:27:28 +0200] rev 10234
tidied some awkward proofs
paulson [Tue, 17 Oct 2000 10:26:07 +0200] rev 10233
tidying; removed unused rev_contra_subsetD
paulson [Tue, 17 Oct 2000 10:23:16 +0200] rev 10232
restoration of "equalityI"; renaming of contrapos rules
paulson [Tue, 17 Oct 2000 10:21:12 +0200] rev 10231
renaming of contrapos rules
paulson [Tue, 17 Oct 2000 10:20:43 +0200] rev 10230
tidying and renaming of contrapos rules
oheimb [Tue, 17 Oct 2000 08:41:42 +0200] rev 10229
cosmetics
nipkow [Tue, 17 Oct 2000 08:00:46 +0200] rev 10228
added intermediate value thms