A definable mathsf E₀-class containing no definable elements
classification
🧮 math.LO
keywords
classcontainingdefinablemathsfdefinedelementsextensiongeneric
read the original abstract
A generic extension $L[x]$ of $L$ by a real $x$ is defined, in which the $\mathsf E_0$-class of $x$ is a lightface $\Pi^1_2$ set containing no ordinal-definable reals.
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