Title of article :
Approximate additive and quadratic mappings in 2-Banach spaces and related topics
Author/Authors :
Cho, Y. J Department of Mathematics Education and the RINS - Gyeongsang National University, Korea , Park, C Hanyang University - Seoul, Korea , Eshaghi Gordji, M Department of Mathematics - Semnan University, Semnan
Abstract :
Won{Gil Park [Won{Gil Park, J. Math. Anal. Appl., 376 (1) (2011) 193-202] proved the Hyers-
Ulam stability of the Cauchy functional equation, the Jensen functional equation and the quadratic
functional equation in 2-Banach spaces. One can easily see that all results of this paper are incorrect.
Hence the control functions in all theorems of this paper are not correct. In this paper, we correct
these results.
Keywords :
Hyers-Ulam Stability , Cauchy Functional Equation , Jensen Functional Equation , Quadratic Functional Equation
Journal title :
Astroparticle Physics
