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Weakly semirecursive sets and r.e. orderings - MaRDI portal

Weakly semirecursive sets and r.e. orderings (Q1210140)

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scientific article; zbMATH DE number 169666
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Weakly semirecursive sets and r.e. orderings
scientific article; zbMATH DE number 169666

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    Weakly semirecursive sets and r.e. orderings (English)
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    16 May 1993
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    This paper continues the investigation of weakly semirecursive sets -- introduced by \textit{C. G. Jockush jun.} and \textit{J. C. Owings} [J. Symb. Logic 55, 637-644 (1990; Zbl 0702.03020)] -- using methods from the theory of r.e. partial orderings. For instance, they prove that a set is weakly semirecursive if only if it is an initial segment of an r.e. partial ordering (this result generalizes the Appel-McLaughlin Theorem for semirecursive sets).
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    weakly semirecursive sets
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    r.e. partial orderings
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    initial segment
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