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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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Local boundedness and continuity for a functional equation on topological spaces
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by C. T. Ng PDF
Proc. Amer. Math. Soc. 39 (1973), 525-529 Request permission

Abstract:

It is known that the locally bounded solutions $f$ of Cauchy’s functional equation $f(x) + f(y) = f(x + y)$ on the reals are necessarily continuous. We shall extend this result to the functional equation $f(x) + g(y) = h(T(x,y))$ on topological spaces.
References
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  • C. T. Ng, On the functional equation $f(x) + \sum \nolimits _{i = 1}^n {{g_i}({y_i}) = h(T(x,{y_1},{y_2}, \cdots ,{y_n}))}$, Ann. Polon. Math. 27 (to appear).
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Additional Information
  • © Copyright 1973 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 39 (1973), 525-529
  • MSC: Primary 39A40
  • DOI: https://doi.org/10.1090/S0002-9939-1973-0318719-3
  • MathSciNet review: 0318719