An ordering of normal ultrafiltres
Julius Barbanel (1985)
Fundamenta Mathematicae
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Julius Barbanel (1985)
Fundamenta Mathematicae
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Arthur Apter, James Henle (1991)
Fundamenta Mathematicae
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A. Hajnal (1964)
Fundamenta Mathematicae
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A. Wojciechowska (1972)
Fundamenta Mathematicae
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W. Hanf (1964)
Fundamenta Mathematicae
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Arthur Apter (1984)
Fundamenta Mathematicae
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Arthur W. Apter (2013)
Bulletin of the Polish Academy of Sciences. Mathematics
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We investigate two global GCH patterns which are consistent with the existence of a tall cardinal, and also present some related open questions.
Arthur W. Apter (2012)
Fundamenta Mathematicae
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We apply techniques due to Sargsyan to reduce the consistency strength of the assumptions used to establish an indestructibility theorem for supercompactness. We then show how these and additional techniques due to Sargsyan may be employed to establish an equiconsistency for a related indestructibility theorem for strongness.
E. Kleinberg (1979)
Fundamenta Mathematicae
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Arthur W. Apter, Grigor Sargsyan (2007)
Bulletin of the Polish Academy of Sciences. Mathematics
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We show how to reduce the assumptions in consistency strength used to prove several theorems on universal indestructibility.
Alexander Abian (1980)
Archivum Mathematicum
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G. P. Monro (1974)
Colloquium Mathematicae
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