Recursion Theory Week: Proceedings of a Conference held in Oberwolfach, FRG, March 19–25, 1989 [1 ed.] 3540527729, 9783540527725, 0387527729
These proceedings contain research and survey papers from many subfields of recursion theory, with emphasis on degree th
211 42 3MB
English Pages 400 [394] Year 1990
Table of contents :
Honest polynomial reductions and exptally sets....Pages 1-22
On the structure of degrees below O′....Pages 23-32
Positive solutions to Post's problem....Pages 33-40
The metamathematics of Fraïssé's order type conjecture....Pages 41-56
Enumeration reducibility, nondeterministic computations and relative computability of partial functions....Pages 57-110
Notes on the O‴ priority method with special attention to density results....Pages 111-140
Array nonrecursive sets and multiple permitting arguments....Pages 141-173
Superbranching degrees....Pages 175-186
A direct construction of a minimal recursively enumerable truth-table degree....Pages 187-204
Σ 2 -induction and the construction of a high degree....Pages 205-221
Undecidability and initial segments of the wtt-degrees ≤0′....Pages 223-244
Randomness and generalizations of fixed point free functions....Pages 245-254
Recursive enumeration without repetition revisited....Pages 255-275
Priority arguments using iterated trees of strategies....Pages 277-296
On the relationship between the complexity, the degree, and the extension of a computable set....Pages 297-322
Polynomially isolated sets....Pages 323-362
A characterization of effective topological spaces....Pages 363-387
Honest polynomial reductions and exptally sets....Pages 1-22
On the structure of degrees below O′....Pages 23-32
Positive solutions to Post's problem....Pages 33-40
The metamathematics of Fraïssé's order type conjecture....Pages 41-56
Enumeration reducibility, nondeterministic computations and relative computability of partial functions....Pages 57-110
Notes on the O‴ priority method with special attention to density results....Pages 111-140
Array nonrecursive sets and multiple permitting arguments....Pages 141-173
Superbranching degrees....Pages 175-186
A direct construction of a minimal recursively enumerable truth-table degree....Pages 187-204
Σ 2 -induction and the construction of a high degree....Pages 205-221
Undecidability and initial segments of the wtt-degrees ≤0′....Pages 223-244
Randomness and generalizations of fixed point free functions....Pages 245-254
Recursive enumeration without repetition revisited....Pages 255-275
Priority arguments using iterated trees of strategies....Pages 277-296
On the relationship between the complexity, the degree, and the extension of a computable set....Pages 297-322
Polynomially isolated sets....Pages 323-362
A characterization of effective topological spaces....Pages 363-387
![Recursion Theory Week: Proceedings of a Conference held in Oberwolfach, FRG, March 19–25, 1989 [1 ed.]
3540527729, 9783540527725, 0387527729](https://ebin.pub/img/200x200/recursion-theory-week-proceedings-of-a-conference-held-in-oberwolfach-frg-march-1925-1989-1nbsped-3540527729-9783540527725-0387527729.jpg)
- Author / Uploaded
- Klaus Ambos-Spies
- Steven Homer
- Dongping Yang (auth.)
- Klaus Ambos-Spies
- Gert H. Müller
- Gerald E. Sacks (eds.)
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