Universal sets for pointsets properly on the <i>n</i><sup>th</sup> level of the projective hierarchy (Q4916557)
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scientific article; zbMATH DE number 6156713
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Universal sets for pointsets properly on the <i>n</i><sup>th</sup> level of the projective hierarchy |
scientific article; zbMATH DE number 6156713 |
Statements
Universal sets for pointsets properly on the <i>n</i><sup>th</sup> level of the projective hierarchy (English)
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23 April 2013
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universal sets
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projective determinacy
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Wadge reducibility
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constructible universe
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Martin's axiom
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projective hierarchy
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Polish space
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Borel hierarchy
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effective descriptive set theory
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