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Full reflection of stationary sets below ℵω

Published online by Cambridge University Press:  12 March 2014

Thomas Jech  and
Saharon Shelah
Thomas Jech
Affiliation:
Department of Mathematics, The Pennsylvania State University, University Park, Pennsylvania 16802
Saharon Shelah
Affiliation:
Institute of Mathematics, The Hebrew University, Jerusalem, Israel
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Abstract

It is consistent that, for every n ≥ 2, every stationary subset of ωn consisting of ordinals of cofinality ωκ, where κ = 0 or κ ≤ n − 3, reflects fully in the set of ordinals of cofinality ωn−1. We also show that this result is best possible.

Type
Research Article
Information
The Journal of Symbolic Logic , Volume 55 , Issue 2 , June 1990 , pp. 822 - 830
Copyright
Copyright © Association for Symbolic Logic 1990

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References

REFERENCES

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