Diamond on Kurepa trees
- Prelegent(ci)
- Ziemowit Kostana
- Afiliacja
- Wrocław University of Science and Technology
- Język referatu
- angielski
- Termin
- 11 czerwca 2025 16:15
- Pokój
- p. 5050
- Seminarium
- Seminarium „Topologia i teoria mnogości”
We investigate a weak variant of Jensen's Diamond, which is expected to guess only cofinal branches of a specific Kurepa tree. We prove that in many scenarios such principle holds. Nevertheless, it is consistent that there exists a Kurepa tree without a corresponding diamond sequence. This is joint work with Assaf Rinot and Saharon Shelah.