Mathematical logic seminar – Feb 5 2019
Time: 3:30pm – 4:30 pm
Room: Wean Hall 8220
Speaker: James Cummings
Department of Mathematical Sciences
Title: More on compactness
I’ll discuss compactness phenomena at regular cardinals, particularly successors of singular cardinals. In particular I’ll explain why ℵω+1 is in some respects completely different from ℵω2+1.
(This talk is related to the talks about compactness that I gave in the Fall semester, but is logically independent)