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Some applications of illfoundedness

Some applications of illfoundedness It is possible to completely characterize which countable models generated by 0# exist inL. This in turn has applications in the study of analytic equivalence relations; for instance, ifE is∑ 1 1 and every invariant∑ 1 1 (0#) set isΔ 1 1 , thenE has at most ℵ0 many equivalence classes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archive for Mathematical Logic Springer Journals

Some applications of illfoundedness

Hjorth, Greg
Archive for Mathematical Logic , Volume 35 (3) – Feb 21, 2005
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References (8)

Publisher
Springer Journals
Copyright
Copyright © 1996 by Springer-Verlag
Subject
Mathematics; Mathematical Logic and Foundations; Mathematics, general; Algebra
ISSN
0933-5846
eISSN
1432-0665
DOI
10.1007/BF01268614
Publisher site
See Article on Publisher Site

Abstract

It is possible to completely characterize which countable models generated by 0# exist inL. This in turn has applications in the study of analytic equivalence relations; for instance, ifE is∑ 1 1 and every invariant∑ 1 1 (0#) set isΔ 1 1 , thenE has at most ℵ0 many equivalence classes.

Journal

Archive for Mathematical Logic – Springer Journals

Published: Feb 21, 2005

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