On the Set-Theoretic strength of Ellis' Theorem and the existence of Free Idempotent Ultrafilters on ω

Eleftherios Tachtsis. On the Set-Theoretic strength of Ellis' Theorem and the existence of Free Idempotent Ultrafilters on ω. Journal of Symbolic Logic, 83(2):551-571, 2018. [doi]

Abstract

Abstract is missing.