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On a quadratic difference assuming three values |
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| Authors: | Forti Gian Luigi |
| Affiliation: | 1.Dipartimento di Matematica, Università degli Studi di Milano, Via C. Saldini, 50, 20133, Milano, Italy ; |
| Abstract: | Aequationes mathematicae - The aim of this work is to investigate the alternative quadratic functional equation $$begin{aligned} f(x+y)+f(x-y)-2f(x)-2f(y)in {0,1,2}, end{aligned}$$ where $$f{:... |
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