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Successive weakly compact or singular cardinals

Published online by Cambridge University Press:  12 March 2014

Ralf-Dieter Schindler*
Affiliation:
Mathematisches Institut, Uni Bonn, Beringstrasse 4, D-53115 Bonn, Germany Department of Mathematics, U. C. Berkeley, Berkeley, California 94720, USA, E-mail: rds@math.uni-bonn.de Department of Mathematics, U. C. Berkeley, Berkeley, California 94720, USA, E-mail: rds@math.berkeley.edu

Abstract

It is shown in ZF that if δ < δ+ < Ω are such that δ and δ+ are either both weakly compact or singular cardinals and Ω is large enough for putting the core model apparatus into action then there is an inner model with a Woodin cardinal.

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 1999

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References

REFERENCES

[1]Jech, T., Set theory, Academic Press, San Diego, 1978.Google Scholar
[2]Kechris, A. S., AD and projective ordinals, Cabal seminar 76–77, Lecture Notes in Mathematics, vol. 689, Springer-Verlag, Berlin, 1987, pp. 91–132.Google Scholar
[3]Martin, D. A. and Steel, J. R., A proof of projective determinacy, Journal of the American Mathematical Society, vol. 2 (1989), pp. 71–125.CrossRefGoogle Scholar
[4]Mitchell, W. J., The core model for sequences of measures II, typescript.Google Scholar
[5]Mitchell, W. J. and Schimmerling, E., Covering without countable closure, Mathematical Research Letters, vol. 2 (1995), pp. 595–609.CrossRefGoogle Scholar
[6]Mitchell, W. J., Schimmerling, E., and Steel, J. R., The covering lemma up to a Woodin cardinal, Annals of Pure and Applied Logic, vol. 84 (1997), pp. 219–255.CrossRefGoogle Scholar
[7]Mitchell, W. J. and Steel, J. R., Fine structure and iteration trees, Lecture Notes in Logic, Springer-Verlag, Berlin, 1994.CrossRefGoogle Scholar
[8]Moschovakis, Y. N., Descriptive set theory, Amsterdam, 1980.Google Scholar
[9]Schimmerling, E. and Steel, J. R., The maximality of the core model, preprint.Google Scholar
[10]Schindler, R.-D., Weak covering at large cardinals, Mathematical Logic Quarterly, vol. 43 (1997), pp. 22–28.CrossRefGoogle Scholar
[11]Steel, J. R., private communication.Google Scholar
[12]Steel, J. R., HODL(ℝ) is a core model below Θ, The Bulletin of Symbolic Logic, vol. 1 (1995), pp. 75–84.CrossRefGoogle Scholar
[13]Steel, J. R., The core model iterability problem, Lecture Notes in Logic, Springer-Verlag, Berlin, 1996.CrossRefGoogle Scholar