Approximate bi-homomorphisms and bi-derivations in C*-ternary algebras: revisited
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Bae and W. Park [3] proved the Hyers-Ulam stability of bi-homomorphisms and bi-derivations inC*-ternary algebras. It is easy to show that the definitions of bi-homomorphisms and bi-derivations, given in[3], are meaningless. So we correct the definitions of bi-homomorphisms and bi-derivations. Under the conditions in the main theorems, we can show that the related mappings must be zero. In this paper, we correct the statements and the proofs of the results, and prove the corrected theorems.
Abstract
Bae and W. Park [3] proved the Hyers-Ulam stability of bi-homomorphisms and bi-derivations inC*-ternary algebras. It is easy to show that the definitions of bi-homomorphisms and bi-derivations, given in[3], are meaningless. So we correct the definitions of bi-homomorphisms and bi-derivations. Under the conditions in the main theorems, we can show that the related mappings must be zero. In this paper, we correct the statements and the proofs of the results, and prove the corrected theorems.
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