• Alexander S. Kechris
Part of the Graduate Texts in Mathematics book series (GTM, volume 156)


The following is perhaps the archetypical Σ 1 1 -complete set. Recall from 4.32 that Tr is the space of trees on ℕ (viewed as a closed subspace of \({2^{{\mathbb{N}^{ < \mathbb{N}}}}}\)).


Closed Subspace Polish Space Trigonometric Series Separable Banach Space Ordinary Summability 
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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Copyright information

© Springer-Verlag New York, Inc. 1995

Authors and Affiliations

  • Alexander S. Kechris
    • 1
  1. 1.Alfred P. Sloan Laboratory of Mathematics and Physics Mathematics 253-37California Institute of TechnologyPasadenaUSA

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