A minimal Kurepa tree with respect to club embeddings
Hossein Lamei Ramandi · Fundamenta Mathematicae · 2019
We show it is consistent with $\mathrm {GCH}$ that there is a minimal Kurepa tree with respect to club embeddings. That is, there is a Kurepa tree $T$ which club embeds in all of its Kurepa subtrees in the sense of Abraham and Shelah (1985). Moreover, the