Universal sets for pointsets properly on the nth level of the projective hierarchy
| Autor: | Greg Hjorth, Leigh Humphries, Arnold W. Miller |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Discrete mathematics
Logic Constructible universe Constructible Universe Universal set Universal sets Projective Determancy Wadge hierarchy Combinatorics Wadge reducibility Philosophy Projective hierarchy Martin's Axiom Martin's axiom ComputingMethodologies_DOCUMENTANDTEXTPROCESSING Axiom of projective determinacy GeneralLiterature_REFERENCE(e.g. dictionaries encyclopedias glossaries) ComputingMilieux_MISCELLANEOUS Mathematics 03E15 03E60 |
| Zdroj: | J. Symbolic Logic 78, iss. 1 (2013), 237-244 |
| ISSN: | 0022-4812 |
| Popis: | The Axiom of Projective Determinacy implies the existence of a universal set for every n ≥ 1. Assuming there exists a universal set. In ZFC there is a universal set for every α. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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