Interpreting N in the computably enumera
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AndrΓ© Nies
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Article
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2001
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Elsevier Science
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English
β 129 KB
We give a ΓΏrst-order coding without parameters of a copy of (N; +; Γ) in the computably enumerable weak truth table degrees. As a tool, we develop a theory of parameter deΓΏnable subsets.