The Rudin-Kisler ordering of P-points under $\mathfrak{b}=\mathfrak{c}$

Andrzej Starosolski

M. E. Rudin proved under CH that for each P-point there exists another P-point strictly RK-greater (M. E. Rudin, Partial orders on the types of $\beta \mathbb{N}$ , Trans. Amer. Math. S…