Let be an Abelian group and be a sequentially complete Hausdorff topological vector space over the field of rational numbers. We deal with a Pexider difference
where and are mappings defined on and taking values in . We investigate the Hyers–Ulam stability of the Pexiderized quartic functional equation
in topological vector spaces.
"A Pexider difference associated to a Pexider quartic functional equation in topological vector spaces." Involve 6 (4) 505 - 510, 2013. https://doi.org/10.2140/involve.2013.6.505