A conjecture of Ershov for a relative hierarchy fails near \({\mathcal O}\)

DOI10.1007/BF01978670zbMath0544.03019WikidataQ123195900 ScholiaQ123195900MaRDI QIDQ796522

Jeanleah Mohrherr

Publication date: 1983

Published in: Algebra and Logic (Search for Journal in Brave)

zbMATH Keywords

RelativizationKleene's 0transfinite difference hierarchy

Mathematics Subject Classification ID

Hierarchies of computability and definability (03D55)

Cites Work

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