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Published in 2020 at "Tamkang Journal of Mathematics"
DOI: 10.5556/j.tkjm.51.2020.2256
Abstract: Let $M_C=\begin{pmatrix} A & C \\ 0 & B \\ \end{pmatrix}\in\LB(\x,\y)$ be be an upper triangulate Banach spaceoperator. The relationship between the spectra of $M_C$ and $M_0,$ and theirvarious distinguished parts, has been studied by…
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Keywords:
operator matrices;
property;
property upper;
upper triangular ... See more keywords