Index Sets Universal for Differences of Arithmetic Sets

Extensional Characterization of Index Sets.Louise Hay & Nancy Johnson - 1979 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 25 (13-18):227-234.

Creative sets.John Myhill - 1955 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 1 (2):97-108.

Dominof-Sets.David W. Straight - 1979 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 25 (13-18):235-249.

Generalized Modal Sets.Atwell R. Turquette - 1972 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 18 (16-18):261-266.

Jumps of Hemimaximal Sets.Rod Downey & Mike Stob - 1991 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 37 (8):113-120.

On the Complexity of Analytic Sets.Karel Hrbacek - 1978 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 24 (25-30):419-425.

On contraproductive sets which are not productive.T. G. McLagughlin - 1964 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 10 (4):49-52.

The degrees of bi-immune sets.Carl G. Jockusch - 1969 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 15 (7-12):135-140.

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Index sets in the arithmetical Hierarchy.Ulrike Brandt - 1988 - Annals of Pure and Applied Logic 37 (2):101-110.

The method of alternating chains.J. W. Addison - 1965 - In The theory of models. Amsterdam,: North-Holland Pub. Co.. pp. 1--16.

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