Charles H. Morgan
1. Stability 2. The Solutions of Cauchy's Equation 3. Hyers' Solution 4. Rassias' Solution 5. Gajda's Solution 6. New Results 7. The Case of p = 1 in Rassias' Inequality 8. Some Further Observations
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In 1821 A. L. Cauchy solved the equation (1:1) f(x + y) = f(x) + f(y) already known to A. M. Legendre and C. F. Gauss as much as thirty years earlier. This functional equation has many practical applications (cf. [1], [2], and [4])...
Paris le 21 août 1789, Sceaux le 23 mai 1857.