摘要

In this paper, using the fixed point and direct methods, we prove the generalized Hyers-Ulam-Rassias stability of the following Cauchy-Jensen additive functional equation:
(0.1) f(x+y+z/2) + f(x-y+z/2) = f(x) + f(z)
in various normed spaces.

  • 出版日期2015-11