Wed, 14 Sep 2005 10:13:12 +0200 haftmann introduces AList.lookup
Wed, 14 Sep 2005 01:47:06 +0200 huffman removed duplicated lemmas; convert more proofs to transfer principle
Tue, 13 Sep 2005 23:30:01 +0200 huffman add theorem chain_const
Tue, 13 Sep 2005 22:49:12 +0200 wenzelm tuned;
Tue, 13 Sep 2005 22:21:06 +0200 wenzelm global quick_and_dirty;
Tue, 13 Sep 2005 22:19:54 +0200 wenzelm Printing of Isar proof elements etc.
Tue, 13 Sep 2005 22:19:53 +0200 wenzelm Non-empty stacks.
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