Projective prewellorderings vs projective wellfounded relations

Journal of Symbolic Logic 74 (2):579-596 (2009)
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Abstract

We show that it is relatively consistent with ZFC that there is a projective wellfounded relation with rank higher than all projective prewellorderings

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10.2178/jsl/1243948328

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Long projective wellorderings.Leo Harrington - 1977 - Annals of Mathematical Logic 12 (1):1.

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