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Borel isomorphisms at the first level—I

Part of: Connections with other structures, applications

Published online by Cambridge University Press:  26 February 2010

J. E. Jayne  and
C. A. Rogers
J. E. Jayne
Affiliation:
The Department of Mathematics, University College, London, WC1E 6BT.
C. A. Rogers
Affiliation:
The Department of Mathematics, University College, London, WC1E 6BT.
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Extract

A Borel isomorphism that, together with its inverse, maps ℱσ-sets to ℱσ-sets will be said to be a Borel isomorphism at the first level. Such a Borel isomorphism will be called a first level isomorphism, for short. We study such first level isomorphisms between Polish spaces and between their Borel and analytic subsets.

MSC classification

Secondary: 54H99: None of the above, but in this section
Type
Research Article
Information
Mathematika , Volume 26 , Issue 1 , June 1979 , pp. 125 - 156
Copyright
Copyright © University College London 1979

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