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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.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

The functional equation $f(xy)+f(xy^{-1})=2f(x)f(y)$ for groups
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by Pl. Kannappan PDF
Proc. Amer. Math. Soc. 19 (1968), 69-74 Request permission
References
  • T. M. Flett, Continuous solutions of the functional equation $f(x+y)+f(x-y)=2f(x)f(y)$, Amer. Math. Monthly 70 (1963), 392โ€“397. MR 149141, DOI 10.2307/2311853
    • Edwin Hewitt and K. A. Ross, Abstract harmonic analysis, Springer-Verlag, Berlin, 1963.
  • Pl. Kannappan, On the functional equation $f(x+y)+f(x-y)=2f(x)f(y)$, Amer. Math. Monthly 72 (1965), 374โ€“377. MR 180774, DOI 10.2307/2313495
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Additional Information
  • © Copyright 1968 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 19 (1968), 69-74
  • MSC: Primary 39.38
  • DOI: https://doi.org/10.1090/S0002-9939-1968-0219936-1
  • MathSciNet review: 0219936