Two theorems of functional analysis effectively equivalent to choice axioms
D. Edwards (1975)
Fundamenta Mathematicae
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D. Edwards (1975)
Fundamenta Mathematicae
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H. Rasiowa, Roman Sikorski (1950)
Fundamenta Mathematicae
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J. Bell, David Fremlin (1972)
Fundamenta Mathematicae
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B. R. Salinas, F. Bombal (1973)
Collectanea Mathematica
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J. Halperin (1964)
Fundamenta Mathematicae
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Miroslav Repický (2015)
Commentationes Mathematicae Universitatis Carolinae
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We present a proof of the Boolean Prime Ideal Theorem in a transitive model of ZF in which the Axiom of Choice does not hold. We omit the argument based on the full Halpern-Läuchli partition theorem and instead we reduce the proof to its elementary case.
J. Łoś, Czesław Ryll-Nardzewski (1955)
Fundamenta Mathematicae
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J. Łoś (1957)
Fundamenta Mathematicae
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Roman Sikorski (1948)
Colloquium Mathematicum
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Eric Schechter (2006)
Fundamenta Mathematicae
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The principle that "any product of cofinite topologies is compact" is equivalent (without appealing to the Axiom of Choice) to the Boolean Prime Ideal Theorem.