Spectrally isometric elementary operators

Martin Mathieu, Matthew Young

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We present criteria for unital elementary operators (of small length) on unital semisimple Banach algebras to be spectral isometries. The surjective ones among them turn out to be algebra automorphisms.
Original languageEnglish
JournalStudia Mathematica
Early online date07 Sep 2016
Publication statusEarly online date - 07 Sep 2016


  • Spectral isometries, elementary operators, Jordan isomorphisms.

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