| Mon, 15 Aug 2011 21:09:08 +0000 | urbanc | polishing of the closure section and conclusion | file | diff | annotate |
| Thu, 11 Aug 2011 23:42:06 +0000 | urbanc | some typos | file | diff | annotate |
| Thu, 11 Aug 2011 23:11:39 +0000 | urbanc | finished section about derivatives and closure properties | file | diff | annotate |