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No Jónsson filters over ℵω

Published online by Cambridge University Press:  12 March 2014

Jan Tryba*
Affiliation:
Department of Mathematics, Gdańsk University, 80-952 Gdańsk, Poland

Abstract

Answering a question of A. Kanamori, we prove that there is no Jónsson filter over the least Jónsson cardinal. We also notice that, assuming □κ, the successor κ+ cannot be Jónsson.

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 1987

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References

REFERENCES

[1] Kanamori, A., Ultrafilters over a measurable cardinal, Annals of Mathematical Logic, vol. 11 (1976), pp. 315356.CrossRefGoogle Scholar
[2] Kanamori, A. and Magidor, M., The evolution of large cardinal axioms in set theory, Higher set theory (Müller, G. and Scott, D., editors), Lecture Notes in Mathematics, vol. 669, Springer-Verlag, Berlin, 1978, pp. 99275.CrossRefGoogle Scholar
[3] Tryba, J., On Jónsson cardinals with uncountable cofinality, Israel Journal of Mathematics, vol. 49 (1984), pp. 315324.CrossRefGoogle Scholar
[4] Tryba, J., Rowbottom-type properties and a cardinal arithmetic, Proceedings of the American Mathematical Society, vol. 96 (1986), pp. 661667.CrossRefGoogle Scholar