Logic Seminar - Asaf Karagila - "What can you say about critical cardinals?"

We isolate the property of being a critical point, and prove some basic positive properties of them. We will also prove a lifting property that allows lifting elementary embedding to symmetric extensions, and outline a construction that shows that it is consistent that a successor of a critical cardinal is singular. This is a recent work with Yair Hayut.

Date: 

Tue, 01/05/2018 - 13:30 to 15:30

Location: 

Math 209