Rukhin, A. L. A remark on the d’Alembert functional equation. (Russian) Zbl 0449.39007 Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 47, 182-183 (1974). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 39B52 Functional equations for functions with more general domains and/or ranges PDFBibTeX XMLCite \textit{A. L. Rukhin}, Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 47, 182--183 (1974; Zbl 0449.39007) Full Text: EuDML