Borel sets and hyperdegrees

DOI10.2307/2273034zbMath0335.02028OpenAlexW2114698937MaRDI QIDQ4101808

Harvey M. Friedman

Publication date: 1973

Published in: Journal of Symbolic Logic (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.2307/2273034

Mathematics Subject Classification ID

Descriptive set theory (03E15) Other degrees and reducibilities in computability and recursion theory (03D30) Hierarchies of computability and definability (03D55)

Related Items (5)

On a Notion of Smallness for Subsets of the Baire Space ⋮ LUZIN’S (N) AND RANDOMNESS REFLECTION ⋮ Classes of Polish spaces under effective Borel isomorphism ⋮ Minimal Covers and Hyperdegrees ⋮ Proof of a Conjecture of Friedman

Cites Work

• A minimal pair of Π₁⁰ classes
• Unnamed Item

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