Some conditions on F: X→R (X = (0,∞) or X = N) which guarantee that all solutions of the equation
F(x) = F(x+1)+F(x(x + 1))
have to be of the form F(x) = F(1)/x are given.
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Vol. 5 (1991)
Published: 1991-09-30
10.2478/amsil