摘要:Park (J. Math. Phys. 47:103512, 2006) proved the Hyers-Ulam stability of homomorphisms in C ∗ -ternary algebras and of derivations on C ∗ -ternary algebras for the following generalized Cauchy-Jensen additive mapping: 2 f ( ∑ j = 1 p x j 2 + ∑ j = 1 d y j ) = ∑ j = 1 p f ( x j ) + 2 ∑ j = 1 d f ( y j ) . In this paper, we improve and generalize some results concerning this functional equation via the fixed-point method. MSC:39B52, 17A40, 46B03, 47Jxx.