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On Weak Diamonds and the Power of Ext

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Part of the Lecture Notes in Mathematics book series (LNM,volume 940)

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

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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