Generalized derivations on certain Banach algebras

Ali Ebrahimzadeh Esfahani, Mehdi Nemati

Let $\mathcal{A}$ be a Banach algebra with the properties that $\mathrm{rad}(\mathcal{A})=\mathrm{rann}(\mathcal{A})$ and the algebra $\mathcal{A}/\mathrm{rad}(\mathcal{A})$ is c…