Department of Mathematics, Semnan University P. O. Box 35195-363, Semnan, Iran.
Department of Mathematics, National Technical University of Athens, Zografou, Campus 15780 Athens, Greece.
The goal of this paper is to investigate the solution
and stability in random normed spaces, in non--Archimedean spaces
and also in $p$--Banach spaces and finally the stability using the
alternative fixed point of generalized additive functions in