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math.LO2024
On Recurrence Axioms
Sakaé Fuchino, Toshimichi Usuba
The Recurrence Axiom for a class of \pos\ and a set of parameters is an axiom scheme in the language of ZFC asserting that if a statement with parameters from …
math.LO2024
A note on uniform ultrafilters in a choiceless context
Toshimichi Usuba
In \cite{HK}, Hayut and Karagila asked some questions about uniform ultrafilters in a choiceless context. We provide several answers to their questions.