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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Homeomorphic measures in metric spaces


Author: John C. Oxtoby
Journal: Proc. Amer. Math. Soc. 24 (1970), 419-423
MSC: Primary 28.13
DOI: https://doi.org/10.1090/S0002-9939-1970-0260961-1
MathSciNet review: 0260961
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Abstract | References | Similar Articles | Additional Information

Abstract: For any nonatomic, normalized Borel measure $\mu$ in a complete separable metric space $X$ there exists a homeomorphism $h:\mathfrak {N} \to X$ such that $\mu = \lambda {h^{ - 1}}$ on the domain of $\mu$, where $\mathfrak {N}$ is the set of irrational numbers in $(0,1)$ and $\lambda$ denotes Lebesgue-Borel measure in $\mathfrak {N}$. A Borel measure in $\mathfrak {N}$ is topologically equivalent to $\lambda$ if and only if it is nonatomic, normalized, and positive for relatively open subsets.


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Keywords: Topologically equivalent Borel measures, homeomorphic measure spaces, measure-preserving mapping, complete separable metric space, space of irrational numbers, Cantor set
Article copyright: © Copyright 1970 American Mathematical Society