We show that the notions of Δ 02 -categoricity and relative Δ 02 -categoricity in Boolean algebras coincide. We prove that for every Turing degree d <0′ a computable Boolean algebra is d-computably categorical if and only if it is computably categorical. Bibliography: 21 titles.
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Translated from Vestnik Novosibirskogo Gosudarstvennogo Universiteta: Seriya Matematika, Mekhanika, Informatika 13, No. 2, 2013, pp. 13–23.
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Bazhenov, N.A. Δ 02 -Categoricity of Boolean Algebras. J Math Sci 203, 444–454 (2014). https://doi.org/10.1007/s10958-014-2148-9
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DOI: https://doi.org/10.1007/s10958-014-2148-9