Department of Mathematics, University of Guilan, P.O. Box 1914, Rasht, Iran
Academic Editor: Charles E. Chidume
Copyright © 2010 Esmaeil Ansari-Piri and Ehsan Anjidani. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
We investigate the superstability of the functional equation , where and are the mappings on Banach algebra . We have also proved the superstability of generalized derivations associated to the linear functional equation , where .