Degrees which do not bound minimal degrees

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Degrees which do not bound minimal degrees

The high/low hierarchy respects the ordering of degrees, and so we can expect to find properties of order which are possessed by all degrees in a given hierarchy class. Such properties can also be found for classes of the generalized high/low hierarchy even though that hierarchy does not respect the ordering of the degrees. For example, Jockusch and Posner [4], extending a result of Cooper [l],...

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ژورنال

عنوان ژورنال: Annals of Pure and Applied Logic

سال: 1986

ISSN: 0168-0072

DOI: 10.1016/0168-0072(86)90022-9