Mathematical logic seminar - January/February 2013

Time: 12:00 - 13:20

Room: Wean Hall 7201

Speaker:     Spencer Unger    
Department of Mathematical Sciences
Carnegie Mellon University

Title: Scales and the Singular Cardinals Hypothesis


(Joint work with Dima Sinapova)

In this series of talks I will present the following recent result which answers a question posed by Woodin in the 80's.

Assuming that there is a supercompact cardinal it is consistent that the singular cardinals hypothesis (SCH) fails at אω and there is a bad scale at אω.