Time:  12:00  13:20 
Room: 
Baker Hall 150

Speaker: 
Spencer Unger Department of Mathematical Sciences Carnegie Mellon University 
Title: 
The tree property II

Abstract: 
This will be the second in a series of three talks surveying a result due to Mitchell, that Con(ZFC + there is a weakly compact cardinal) implies Con(ZFC + omega_2 has the tree property). (Note: This series of talks is designed as a sort of lead up to Itay Neeman's workshop at the end of the month.) 