Mathematics – Functional Analysis
Scientific paper
2009-07-16
Mathematics
Functional Analysis
Scientific paper
In this paper, we establish the stability and superstability of
$J^*-$derivations in $J^*-$algebras for the generalized Jensen--type functional
equation $$rf(\frac{x+y}{r})+rf(\frac{x-y}{r})= 2f(x).$$ Finally, we
investigate the stability of $J^*-$derivations by using the fixed point
alternative.
Ebadian A.
Ghaemi M. B.
Gordji Eshaghi M.
Shams S.
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