ASPERÓ–MOTA ITERATION AND THE SIZE OF THE CONTINUUM
| Autor: | TERUYUKI YORIOKA |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | The Journal of Symbolic Logic. :1-34 |
| ISSN: | 1943-5886 0022-4812 |
| Popis: | In this paper we build an Asperó–Mota iteration of length $\omega _2$ that adds a family of $\aleph _2$ many club subsets of $\omega _1$ which cannot be diagonalized while preserving $\aleph _2$ . This result discloses a technical limitation of some types of Asperó–Mota iterations. |
| Databáze: | OpenAIRE |
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