Kurepa tree
= Kurepa tree
{c}
A <set-theoretic tree> of height $\omega_1$ with countable levels and at least $\aleph_2$ distinct <cofinal branches>.
= Kurepa tree
{c}
A <set-theoretic tree> of height $\omega_1$ with countable levels and at least $\aleph_2$ distinct <cofinal branches>.