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The distribution of properly Σ20 e-degrees
Published online by Cambridge University Press: 12 March 2014
Abstract
We show that for every enumeration degree a < 0′e there exists an e-degree c such that a ≤ c < 0′e, and all degrees b, with c ≤ b < 0′e, are properly Σ20.
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- Research Article
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- Copyright © Association for Symbolic Logic 2000
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