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The natural hierarchy and quasi-hierarchy of constructibility degrees

Published online by Cambridge University Press:  12 March 2014

Philip Welch
Philip Welch*
Affiliation:
Department of Mathematics, University of California at Los Angeles, Los Angeles, California 90024
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Abstract.

We investigate the set S2 of “quickly sharped” reals:

in the manner of [K] defining a natural hierarchy and quasi-hierarchy of constructibility degrees and identifying their termination points.

Type
Research Article
Information
The Journal of Symbolic Logic , Volume 51 , Issue 1 , March 1986 , pp. 130 - 134
Copyright
Copyright © Association for Symbolic Logic 1986

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References

REFERENCES

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[K]Kechris, A., The theory of countable analytic sets, Transactions of the American Mathematical Society, vol. 202 (1975), pp. 259–297.Google Scholar
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