Inhomogeneities in the polynomial-time degrees: The degrees of super sparse sets (Q1075319)
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scientific article; zbMATH DE number 3950505
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Inhomogeneities in the polynomial-time degrees: The degrees of super sparse sets |
scientific article; zbMATH DE number 3950505 |
Statements
Inhomogeneities in the polynomial-time degrees: The degrees of super sparse sets (English)
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1986
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We give some examples of pairwise nonisomorphic nontrivial principal ideals of polynomial-time degrees of recursive sets. These results yield limitations on the previously used method to characterize the structure of (the principal ideal of) the polynomial-time degrees of NP-sets (under the assumption that \(P\neq NP)\) by proving the desired results for all nontrivial principal ideals of the polynomial-time degrees.
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polynomial-time reducibilities
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principal ideals of polynomial-time degrees of recursive sets
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NP-sets
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