@Article{Mathieu2016,
author = "Mathieu, Martin",
title = "Elementary operators - still not elementary?",
journal = "Opuscula Math.",
year = "2016",
volume = "36",
number = "6",
pages = "787--797",
doi = "http://dx.doi.org/10.7494/OpMath.2016.36.6.787",
url = "http://dx.doi.org/10.7494/OpMath.2016.36.6.787",
abstract = "Properties of elementary operators, that is, finite sums of two-sided multiplications on a Banach algebra, have been studied under a vast variety of aspects by numerous authors. In this paper we review recent advances in a new direction that seems not to have been explored before: the question when an elementary operator is spectrally bounded or spectrally isometric. As with other investigations, a number of subtleties occur which show that elementary operators are still not elementary to handle.",
keywords = "spectral isometries, elementary operators, Jordan isomorphisms",
issn = "1232-9274"
}