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The Ramsey property implies no mad families. [PDF]

open access: yesProc Natl Acad Sci U S A, 2019
Schrittesser D, Törnquist A.
europepmc   +1 more source

Expressive Power of Infinitary Logic and Absolute co-Hopfianity

open access: yes
Recently, Paolini and Shelah have constructed absolutely Hopfian torsion-free abelian groups of any given size. In contrast, we show that this is not necessarily the case for absolutely co-Hopfian groups.
Asgharzadeh, Mohsen   +2 more
core  

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