On the definable ideal generated by the plus cupping c.e. degrees (Q877264)
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scientific article; zbMATH DE number 5145101
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On the definable ideal generated by the plus cupping c.e. degrees |
scientific article; zbMATH DE number 5145101 |
Statements
On the definable ideal generated by the plus cupping c.e. degrees (English)
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19 April 2007
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The author proves that the cupping degrees generate a definable ideal on c.e. degrees different from the known ones, solving a problem posed by Li and Yang in 2003.
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computably enumerable degree
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definable ideal
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plus cupping degree
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