Abstract
In [DS] K. Devlin and S. Shelah introduced a combinatorial principle Φ which they called the weak diamond.
Keywords
- Abelian Group
- Regular Cardinal
- Stationary Subset
- Pure Subgroup
- Ladder System
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© 1982 Springer-Verlag Berlin Heidelberg
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Shelah, S. (1982). On Weak Diamonds and the Power of Ext. In: Proper Forcing. Lecture Notes in Mathematics, vol 940. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-21543-2_14
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DOI: https://doi.org/10.1007/978-3-662-21543-2_14
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-11593-9
Online ISBN: 978-3-662-21543-2
eBook Packages: Springer Book Archive
