Dane publikacji
Tom 272
Zeszyt 2
Czasopismo: Fundamenta Mathematicae
Strony: 171-203
Data publikacji online: 13.01.2026
Liczba wyświetleń: 0
Liczba pobrań: 0
Abstrakt
We continue the study of the Erdős–Dushnik–Miller theorem (A graph with an uncountable set of vertices has either an infinite independent set or an uncountable clique) in set theory without the axiom of choice. We show that there are three inequivalent versions of this theorem and we give some results about the positions of these versions in the deductive hierarchy of weak choice principles. Furthermore, we settle some open problems from Tachtsis [Monatsh. Math. 203 (2024), 677–693] and from Banerjee and Gopaulsingh [Bull. Polish Acad. Sci. Math. 71 (2023), 1–21].