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The Cardinality of the second uniform indiscernible

Greg Hjorth
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Abstract

When the second uniform indiscernible is $\aleph_{2}$, the Martin-Solovay tree only constructs countably many reals; this resolves a number of open questions in descriptive set theory.

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Greg Hjorth. 1992-05-01. The Cardinality of the second uniform indiscernible. https://arxiv.org/abs/math/9205201

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