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Jun 30, 2021 at 20:50 comment added Noah Schweber Interesting, thanks! I'm now curious about the possible complexities of $\tilde{A}$ for $A\in\Delta^0_2$, but I'll think about that more before asking another question.
Jun 30, 2021 at 20:48 vote accept Noah Schweber
Jun 30, 2021 at 20:37 history answered Theodore Slaman CC BY-SA 4.0