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Jan 15, 2019 at 2:25 history edited Dmytro Taranovsky CC BY-SA 4.0
added a nonrecursive construction with $Σ^1_1$ reflection
Jan 14, 2019 at 10:18 comment added Fedor Pakhomov It is a nice example. And I don't see any gaps in the construction.
Jan 14, 2019 at 8:29 history answered Dmytro Taranovsky CC BY-SA 4.0