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Index sets in Ershov’s hierarchy. (English) Zbl 0287.02030


MSC:

03D55 Hierarchies of computability and definability
03D25 Recursively (computably) enumerable sets and degrees
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References:

[1] DOI: 10.1090/S0002-9939-1966-0186541-3 · doi:10.1090/S0002-9939-1966-0186541-3
[2] DOI: 10.1007/BF02218750 · doi:10.1007/BF02218750
[3] Index sets of finite classes of recursively enumerable sets 34 pp 39– (1969) · Zbl 0193.31003
[4] Theory of recursive functions and effective computability (1967) · Zbl 0183.01401
[5] A discrete chain of degrees of index sets 37 pp 139– (1972)
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