Wadge Hierarchy of differences of Co-analytic Sets
| Autor: | Kevin Fournier |
|---|---|
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | J. Symb. Log. |
| ISSN: | 0022-4812 |
| DOI: | 10.1017/jsl.2014.79 |
| Popis: | We begin the fine analysis of nonBorel pointclasses. Working in ZFC + DET$\left( {_1^1 } \right)$, we describe the Wadge hierarchy of the class of increasing differences of co-analytic subsets of the Baire space by extending results obtained by Louveau ([5]) for the Borel sets. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|