Wed, 22 Feb 2017 15:04:59 +0000 | paulson | New theory about Winding Numbers | changeset | files |
Wed, 22 Feb 2017 12:30:28 +0000 | paulson | new lemmas about segments, etc. Also recast some theorems to use Union rather than general set comprehensions | changeset | files |
Tue, 21 Feb 2017 17:12:10 +0000 | paulson | some new material, also recasting some theorems using “obtains” | changeset | files |