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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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Quotients of $c_{0}$ are almost isometric to subspaces of $c_{0}$
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by Dale E. Alspach PDF
Proc. Amer. Math. Soc. 76 (1979), 285-288 Request permission

Abstract:

It is shown that for every $\varepsilon > 0$ and quotient space X of ${c_0}$ there is a subspace Y of ${c_0}$ such that the Banach-Mazur distance $d(X,Y)$ is less than $1 + \varepsilon$. This improves a result of Johnson and Zippin.
References
    N. Dunford and J. T. Schwarz, Linear operators. I: General theory, Pure and Appl. Math., vol. 7, Interscience, New York, 1958.
  • W. B. Johnson and M. Zippin, Subspaces and quotient spaces of $(\sum G_{n})_{l_{p}}$ and $(\sum G_{n})_{c_{0}}$, Israel J. Math. 17 (1974), 50–55. MR 358296, DOI 10.1007/BF02756824
  • Joram Lindenstrauss and Lior Tzafriri, Classical Banach spaces, Lecture Notes in Mathematics, Vol. 338, Springer-Verlag, Berlin-New York, 1973. MR 0415253
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Additional Information
  • © Copyright 1979 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 76 (1979), 285-288
  • MSC: Primary 46B25; Secondary 46A45
  • DOI: https://doi.org/10.1090/S0002-9939-1979-0537089-4
  • MathSciNet review: 537089