Tue, 16 Jul 2013 10:18:25 +0200 | nipkow | added exercise | changeset | files |
Mon, 15 Jul 2013 15:50:39 +0200 | traytel | killed unused theorems | changeset | files |
Mon, 15 Jul 2013 14:23:51 +0200 | traytel | eliminate duplicated theorems (thanks to "Auto solve_direct" in jEdit) | changeset | files |
Mon, 15 Jul 2013 11:29:19 +0200 | wenzelm | tuned specifications and proofs; | changeset | files |