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arxiv: 1312.6023 · v1 · pith:ELXTQAS3new · submitted 2013-12-20 · 🧮 math.FA

More elementary operators that are spectrally bounded

classification 🧮 math.FA
keywords banachboundedelementarysomespectrallythreeactsalgebra
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We discuss some necessary and some sufficient conditions for an elementary operator $x\mapsto\sum_{i=1}^n a_ixb_i$ on a Banach algebra $A$ to be spectrally bounded. In the case of length three, we obtain a complete characterisation when $A$ acts irreducibly on a Banach space of dimension greater than three.

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