Grigorieff forcing and the tree property
In this paper we use Grigorieff forcing to obtain the tree property at the second successor of a regular uncountable cardinal κ. We also show that Silver forcing can be used to obtain the tree property at ℵ2.
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| Veröffentlicht in: | Acta Universitatis Carolinae. Philosophica et historica 2017, Vol.XXIII (2), p.63-72 |
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| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | In this paper we use Grigorieff forcing to obtain the tree property at the second successor of a regular uncountable cardinal κ. We also show that Silver forcing can be used to obtain the tree property at ℵ2. |
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| ISSN: | 0567-8293 2464-7055 |