scientific article; zbMATH DE number 3397530
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Publication:5665184
zbMath0252.02043MaRDI QIDQ5665184
Publication date: 1971
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Research exposition (monographs, survey articles) pertaining to mathematical logic and foundations (03-02) Hierarchies of computability and definability (03D55)
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