Selman, Alan L. Arithmetical reducibilities. I. (French) Zbl 0229.02037 Z. Math. Logik Grundlagen Math. 17, 335-350 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 23 Documents MSC: 03D30 Other degrees and reducibilities in computability and recursion theory 03D55 Hierarchies of computability and definability PDF BibTeX XML Cite \textit{A. L. Selman}, Z. Math. Logik Grundlagen Math. 17, 335--350 (1971; Zbl 0229.02037) Full Text: DOI