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Q4285797 - MaRDI portal

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scientific article; zbMATH DE number 535104
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English
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scientific article; zbMATH DE number 535104

    Statements

    author
    André Nies
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    publication date
    21 March 1994
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    zbMATH Keywords
    definability
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    undecidability
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    upper semilattices of r.e. degrees
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    reducibilities
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    lattices of sets under inclusion and degree orderings
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    Identifiers

    Mathematics Subject Classification ID
    03D35
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    03D25
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    03D30
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    zbMATH DE Number
    535104
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