Time: | 12:00 - 13:20 |
Room: |
Wean Hall 7201
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Speaker: |
Chris Lambie-Hanson Department of Mathematical Sciences Carnegie Mellon University |
Title: |
Jonsson cardinals, partition relations and stationary reflection II
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Abstract: |
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. This answers a question of Eisworth motivated by the study of Jónsson cardinals and square-bracket partition relations and is joint work with James Cummings. |