Bull. Korean Math. Soc. 2002; 39(2): 211-224
Printed June 1, 2002
Copyright © The Korean Mathematical Society.
Kil-Woung Jun and Hark-Mahn Kim
Chungnam National University, Chungnam National University
In this paper we show that if $D$ is a continuous linear Jordan derivation on a Banach algebra $A$ satisfying $[[D(x^{n})$, $x^{n}]$, $x^{n}]$ $\in$ rad$(A)$ for a positive integer $n$ and for all $x \in A$, then $D$ maps $A$ into rad($A$).
Keywords: extended centroid, Jordan derivation, Jacobson radical
MSC numbers: 47B47, 46H99
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