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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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A theorem on function spaces
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by Jan Baars, Joost de Groot and Jan van Mill PDF
Proc. Amer. Math. Soc. 105 (1989), 1020-1024 Request permission

Abstract:

Let $X$ and $Y$ be normal and first countable spaces, such that ${C_p}(X)$ and ${C_p}(Y)$ are linearly homeomorphic. Suppose ${X^{(\alpha )}}$ is countably compact for some $\alpha < {\omega _1}$. We prove that if $\alpha = 1$ then ${Y^{(\alpha )}}$ is also countably compact. The first countability condition in this result is essential. We also present examples that if $\alpha$ is not a prime component, then ${Y^{(\alpha )}}$ need not to be countably compact.
References
    A. V. Arhangelskiǐ, On linear homeomorphisms of function spaces, Soviet Math. Dokl. 25 (1982), 852-855.
  • Jan Baars and Joost de Groot, An isomorphical classification of function spaces of zero-dimensional locally compact separable metric spaces, Comment. Math. Univ. Carolin. 29 (1988), no. 3, 577–595. MR 972840
  • J. Baars, J. de Groot, J. van Mill and J. Pelant, On topological and linear homeomorphisms of certain function spaces (to appear in top. and appl.).
  • Kazimierz Kuratowski and Andrzej Mostowski, Set theory, Second, completely revised edition, Studies in Logic and the Foundations of Mathematics, Vol. 86, North-Holland Publishing Co., Amsterdam-New York-Oxford; PWN—Polish Scientific Publishers, Warsaw, 1976. With an introduction to descriptive set theory; Translated from the 1966 Polish original. MR 0485384
  • Z. Semadeni, Banach spaces of continuous functions, PWN Warszawa, 1971. W. Sierpiǹski, Cardinal and ordinal numbers, PWN Warszawa, 1958.
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Additional Information
  • © Copyright 1989 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 105 (1989), 1020-1024
  • MSC: Primary 54C35; Secondary 54A25
  • DOI: https://doi.org/10.1090/S0002-9939-1989-0943792-0
  • MathSciNet review: 943792