Index sets in the hyperarithmetical hierarchy (Q1068818)
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scientific article; zbMATH DE number 3930991
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Index sets in the hyperarithmetical hierarchy |
scientific article; zbMATH DE number 3930991 |
Statements
Index sets in the hyperarithmetical hierarchy (English)
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1984
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The author studies the possibilities to give structural descriptions of families of abstracts classes of numbered sets, whose index sets belong to a given class of various hierarchies (the arithmetical hierarchy, the Ershov hierarchy).
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families of abstracts classes of numbered sets
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Ershov hierarchy
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