Thu, 13 Jun 2013 17:26:39 -0400 | blanchet | store more theorems in data structure | changeset | files |
Thu, 13 Jun 2013 16:58:20 -0400 | blanchet | tuning | changeset | files |
Thu, 13 Jun 2013 14:35:05 +0200 | nipkow | simplified proofs | changeset | files |
Wed, 12 Jun 2013 20:52:09 -0700 | kleing | prefer xsymbol for book | changeset | files |