Tue, 06 Sep 2011 21:11:12 +0200 | wenzelm | merged | changeset | files |
Tue, 06 Sep 2011 10:30:33 -0700 | huffman | merged | changeset | files |
Tue, 06 Sep 2011 10:30:00 -0700 | huffman | simplify proof of tan_half, removing unused assumptions | changeset | files |
Tue, 06 Sep 2011 09:56:09 -0700 | huffman | convert some proofs to Isar-style | changeset | files |