Fri, 31 Jan 1997 17:51:42 +0100 | paulson | Declaration of ccontr (classical contradiction) for HOL compatibility | changeset | files |
Fri, 31 Jan 1997 17:50:47 +0100 | paulson | Correction to Problem 24 | changeset | files |
Fri, 31 Jan 1997 17:17:10 +0100 | paulson | Correction to Problem 24 | changeset | files |