Universal and Complete Sets

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

Abstract

For any class Γ of sets in Polish spaces and each Polish space Y, let
$${\exists ^Y}\Gamma = \left\{ {pro{j_x}\left( B \right):B \in \Gamma \left( {XxY} \right),X\begin{array}{*{20}{c}} {Polish} \end{array}} \right\}$$
.

Keywords

Coherence Cardi 

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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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