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The Alternative Of Fixed Point And Stability Results For Functional Equations

Liviu Cadariu, Viorel Radu


We present Ulam-Hyers-Bourgin stability theorems for functional equations of quadratictype, slightly extending some results in [12], [17], [18], [22], [26], [27], [29], [30] and [31]. Both the direct method and the fixed point method are used.


Functional equations, Fixed points, Ulam-Hyers-Bourgin stability.

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