A good lightface Δ1n well-ordering of the reals does not imply the existence of boldface Δ1n-1 well-orderings.
Annals of Pure and Applied Logic, Jun 2024, Vol. 175, Iss. 6, Art. 103426.
DOI: 10.1016/j.apal.2024.103426
(WoS Q2)
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| Authors: Kanovei V., Lyubetsky V. |