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Generalized Hyers-Ulam-Rassias Stability of a System of Bi-Reciprocal Functional Equations

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Abstract (2. Language): 
In this paper, we find the generalized Hyers-Ulam-Rassias stability of the system of bi-reciprocal functional equations r(x + u, y) = r(x, y)r(u, y) r(x, y) + r(u, y) , r(x, y + v) = r(x, y)r(x, v) r(x, y) + r(x, v) in the setting of Fr´echet spaces.
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