Time:  12:00  13:20 
Room: 
Wean Hall 7201

Speaker: 
Spencer Unger Department of Mathematical Sciences Carnegie Mellon University 
Title: 
Recent work on the tree property I

Abstract: 
This is the first in a series of three talks about recent work on the tree property. In this talk I will outline Mitchell's classical proof that omega_2 can have the tree property (relative to the consistency of a weakly compact cardinal). 