Resumen
We investigate infinite sets that witness the failure of certain Ramsey-theoretic statements, such as Ramsey's or (appropriately phrased) Hindman's theorem; such sets may exist if one does not assume the Axiom of Choice. We obtain very precise information as to where such sets are located within the hierarchy of infinite Dedekind-finite sets.
Idioma original | Inglés |
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Número de artículo | 102961 |
Publicación | Annals of Pure and Applied Logic |
Volumen | 172 |
N.º | 6 |
DOI | |
Estado | Publicada - jun. 2021 |
Publicado de forma externa | Sí |