Fri, 21 Jan 2011 22:58:03 +0100 | Christian Urban | better flow of proofs and definitions and proof | changeset | files |
Fri, 21 Jan 2011 22:23:44 +0100 | Christian Urban | separated type preservation and progress into a separate file | changeset | files |
Fri, 21 Jan 2011 22:02:34 +0100 | Christian Urban | substitution lemma in separate file | changeset | files |