On the functional equation \(\phi(x) + \phi(y) = \psi(T(x,y))\)
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Publication:2547675
DOI10.1007/BF01819752zbMath0222.39004MaRDI QIDQ2547675
Publication date: 1971
Published in: Aequationes Mathematicae (Search for Journal in Brave)
Full work available at URL: https://eudml.org/doc/136189
Functional equations for real functions (39B22) Functional equations for functions with more general domains and/or ranges (39B52)
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