In this paper we study general solutions of the following Pexider functional equation

\\\\\\\\begin{eqnarray}

(4-k)f_{1}(\\\\\\\\sum_{i=1}^{k}x_{i})+

\\\\\\\\sum_{j=2}^{k}f_{j}((\\\\\\\\sum_{i=1,i...

orthogonally quadratic mapping on X is a quadratic mapping. Also we prove the Hyers-Ulam stability of orthogonally quadratic functional equation and the Hyers-Ulam stability of orthogonally pexiderized quadratic functional equation....

Stability of functional equations in non-Archimedian spaces...

We introduce an extended Jensen equation where q > 1 and n are fixed positive integers. We investigate the stability and the asymptotic behavior of the above extended Jensen equation and prove that if 0 < p < 1 ...

In this paper, using the fixed point method, we prove the stability of a generalized functional

equation in the Forti spiri

. In this talk, we investigate the

stability (see \\cite{RAS}) of the quadratic functional equation for

mappings from linear spaces into multi-normed spaces (see

\\cite{D-M}). We then study an asymptotic behavior of the quadratic...

We establish some stability results concerning the quartic functional equation

f(2x + y) + f(2x ¡ y) = 4f(x + y) + 4f(x ¡ y) + 24f(x) - 6f(y)

in the setting of fuzzy normed spaces that in turn generalize a Hyers-Ulam stability...

We will establish stability of Frechet functional equation

in non-Archimedean normed spaces for some unbounded control function. Among some

applications of our results, we will give a counterexample to show that the nature of stability...