Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-28T07:02:32.582Z Has data issue: false hasContentIssue false

Category algebras of complete metric spaces

Published online by Cambridge University Press:  26 February 2010

Dorothy Maharam
Affiliation:
University of Rochester, Rochester, N. Y., U. S. A.
A. H. Stone
Affiliation:
University of Rochester, Rochester, N. Y., U. S. A.
Get access

Abstract

We show that a complete metric space X has an essentially unique “nice” zero-dimensional dense Gδ subset, and derive from this a complete algebraic description of the “category algebra” (of Borel modulo first category sets) of X.

MSC classification

Type
Research Article
Copyright
Copyright © University College London 1979

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Jayne, J. E. and Rogers, C. A.. “Borel isomorphisms at the first level”, Mathematika, 26 (1979), 125156 and 157–.Google Scholar
2.Maharan, Dorothy and Stone, A. H.. “Realizing isomorphisms of category algebras”, Bull. Australian Math. Soc, 19 (1978), 510.CrossRefGoogle Scholar
3.Oxtoby, J. C.. “Spaces that admit a category measure”, J.f.d. reine u. angew. Math. 205 (1961), 156170.Google Scholar
4.Stone, A. H.. “Non-separable Borel sets”, Rozprawy Mat., 28 = Dissertationes Math., 28 (Warsaw) (1962).Google Scholar
5.Stone, A. H.. “Non-separable Borel sets II”, Gen. Topology and Appl., 2 (1972), 249270.CrossRefGoogle Scholar