aequationes mathematicae

, Volume 5, Issue 1, pp 3–9 | Cite as

On two functional equations connected with the equationϕ(x+y)+ϕ(x-y)=2ϕ(x)+2ϕ(y)

  • Halina Światak
Research Papers


Functional Equation 
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  1. [1]
    Aczél, J.,The General Solution of Two Functional Equations by Reduction to Functions Additive in Two Variables and with the Aid of Hamel Bases, Glasnik Mat. Fiz. Astronom.20, 65–73 (1965).Google Scholar
  2. [2]
    Aczél, J. andVincze, E.,Über eine gemeinsame Verallgemeinerung zweier Funktionalgleichungen von Jensen, Publ. Math. Debrecen10, 326–344 (1963).Google Scholar

Copyright information

© Birkhäuser Verlag 1970

Authors and Affiliations

  • Halina Światak
    • 1
  1. 1.Jagello UniversityCracowPoland

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