Archive for Mathematical Logic

, Volume 39, Issue 7, pp 541–568 | Cite as

The size of $\tilde{T}$

  • Paul Larson


Given a stationary subset T of \(\omega_{1}\), let \(\tilde{T}\) be the set of ordinals in the interval \((\omega_{1}, \omega_{2})\) which are necessarily in the image of T by any embedding derived from the nonstationary ideal. We consider the question of the size of \(\tilde{T}\), givenT, and use Martin's Maximum and \(\mathbb{P}_{max}\) to give some answers.


Stationary Subset Nonstationary Ideal 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Paul Larson
    • 1
  1. 1.5100 Randall Lane, Bethesda, MD 20816, USA. e-mail:

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