| Mon, 28 Feb 2011 15:21:10 +0000 | Christian Urban | split the library into a basics file; merged Nominal_Eqvt into Nominal_Base | file | diff | annotate |
| Thu, 24 Feb 2011 16:26:11 +0000 | Christian Urban | added a lemma about fresh_star and Abs | file | diff | annotate |