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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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Chebyshev constant for centered sets
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by Susan L. Friedman PDF
Proc. Amer. Math. Soc. 50 (1975), 344-350 Request permission

Abstract:

Using $\lambda$th power means in the case $\lambda \geq 1$ it is proven that the Chebyshev constant of any bounded centered set in a metric space is equal to one-half the topological diameter of the set. Thus the Chebyshev constant for any unit ball of a normed linear space is equal to one for the above means.
References
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Additional Information
  • © Copyright 1975 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 50 (1975), 344-350
  • MSC: Primary 41A45
  • DOI: https://doi.org/10.1090/S0002-9939-1975-0370015-6
  • MathSciNet review: 0370015