Chris Lambie-Hanson: Jónsson cardinals, partition relations, and stationary reflection, Part II

CMU math logic seminar Tue Feb 25 Speaker:  Chris Lambie-Hanson Title: Jónsson cardinals, partition relations, and stationary reflection, Part II Abstract: I will present a proof that, relative to large cardinal assumptions, it is consistent that there is a singular cardinal mu such that every stationary subset of mu^+ reflects but that there is a stationary subset of mu^+ that does not reflect at ordinals of arbitrarily high cofinality. continue reading…