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On a functional equation related to the Ptolemaic inequality

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References

  1. Aczél, J. andDhombres, J.,Functional equations containing several variables. Cambridge University Press, Cambridge, 1988.

    Google Scholar 

  2. Day, M. M.,Normed linear spaces. Springer Verlag, New York—Heidelberg, 1973.

    Google Scholar 

  3. Dhombres, J.,Some aspects of functional equations. Pub. Chulalongkorn University, Bangkok (Thailand), 1979.

    Google Scholar 

  4. Niven, I.,Irrational numbers. (The Carus Mathematical Monograph, no. 11). The Mathematical Association of America-John Wiley & Sons, New York, 1956.

    Google Scholar 

  5. Volkmann, P.,Eine Characterisierung der positiv definiten quadratischen Formen. Aequationes Math.11 (1974), 174–181.

    Google Scholar 

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Dedicated to Professor Otto Haupt with best wishes on his 100th birthday.

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Alsina, C., Garcia-Roig, J.L. On a functional equation related to the Ptolemaic inequality. Aeq. Math. 34, 298–303 (1987). https://doi.org/10.1007/BF01830679

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  • DOI: https://doi.org/10.1007/BF01830679

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