Time:  12  1:20 p.m. 
Room: 
OSC 201

Speaker: 
James Cummings Associate Professor Department of Mathematical Sciences Carnege Mellon University 
Title: 
Rainbow Ramsey theory and the PFA continued

A proper poset is a poset which preserves the stationarity of stationary families of countable sets. The Proper Forcing Axiom is the generalisation of Martin's Axiom in which the countable chain condition is weakened to the demand of properness.
In this seminar I plan to