(In the fall of 2012 I will be taking Stevo Todorcevic’s class in Forcing at the University of Toronto. I will try to publish my notes here, although that won’t always be possible.)
Summary of class 1.
- Discuss examples of ccc posets whose product is not ccc.
- Prove a theorem of Baumgartner’s that relates the branches in a tree to its antichain structure.
- Display the differences in chain conditions.