Norm for Sums of Two Basic Elementary Operators

A. Bachir, F. Lombarkia and A. Segres

International Journal of Mathematics and Mathematical Sciences, 2012, vol. 2012, 1-12

Abstract:

We give necessary and sufficient conditions under which the norm of basic elementary operators attains its optimal value in terms of the numerical range.

Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:643568

DOI: 10.1155/2012/643568

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