The Cardinality of the second uniform indiscernible
classification
🧮 math.LO
keywords
indiscernibleseconduniformalephcardinalityconstructscountablydescriptive
read the original 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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