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On the Superstability and Stability of the Pexiderized Exponential Equation | ||
Caspian Journal of Mathematical Sciences | ||
مقاله 2، دوره 1، شماره 2، مهر 2012، صفحه 61-74 اصل مقاله (114.99 K) | ||
نوع مقاله: Research Articles | ||
نویسندگان | ||
Mohsen Alimohammady؛ Ali Sadeghi | ||
Department of Mathematics, University of Mazandaran | ||
تاریخ دریافت: 10 آبان 1390، تاریخ بازنگری: 25 آذر 1390، تاریخ پذیرش: 27 آذر 1390 | ||
چکیده | ||
The main purpose of this paper is to establish some new results on the superstability and stability via a fixed point approach for the Pexiderized exponential equation, i.e., $$\|f(x+y)-g(x)h(y)\|\leq \psi(x,y),$$ where $f$, $g$ and $h$ are three functions from an arbitrary commutative semigroup $S$ to an arbitrary unitary complex Banach algebra and also $\psi: S^{2}\rightarrow [0,\infty)$ is a function. Furthermore, in connection with the open problem of Th. M. Rassias and our results we generalized the theorem of Baker, Lawrence, Zorzitto and theorem of L. Sz$\acute{e}$kelyhidi. | ||
کلیدواژهها | ||
Superstability؛ Cauchy equation؛ Stability؛ Semigroup؛ Fixed point | ||
آمار تعداد مشاهده مقاله: 2,472 تعداد دریافت فایل اصل مقاله: 2,462 |